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22 Subtle Signs That Someone Is Much, Much Smarter Than They're Letting On

Have you ever heard this quote? "Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid."

It's most commonly attributed to Albert Einstein (though, apparently, that's not true). But regardless of who initially said it, I think it's a great sentiment because it succinctly expresses the idea that intelligence comes in many different forms.

And on the topic of intelligence, Reddit user u/Mysterious-Ad5451 recently asked, "What’s a sign that someone is way smarter than they let on?" on r/AskReddit. The post has since received over 3,000 responses, many of which are really thought-provoking.

So, here are 22 ways that you can tell someone is much, much more intelligent than they are letting on.

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1."People who meet you on your wavelength are smarter than most."

Two men sit in a cozy, book-filled office, having a conversation. One is casually dressed in a t-shirt and jeans, the other in a patterned shirt
Two men sit in a cozy, book-filled office, having a conversation. One is casually dressed in a t-shirt and jeans, the other in a patterned shirt

"They can talk about pretty much anything with anyone. They’ll shoot the sh*t with some people and discuss politics with others."

u/SassySugarCookie

2."People who can admit when they’re wrong. People who reconsider their positions based on new evidence."

Person in vintage clothing stands by a map on the wall with notes and string connections, lit by candlelight. They have a playful expression
Person in vintage clothing stands by a map on the wall with notes and string connections, lit by candlelight. They have a playful expression

u/Puzzleheaded_Gene909

"When people take a moment to contemplate an argument they disagree with rather than just reflectively dismissing it. Smart people are willing to have their assumptions challenged and reevaluate them."

u/Flurb4

3."Endless curiosity."

Man in glasses reads a book titled "Groundwork for the Metaphysics of Morals" while sitting in a modern chair, appearing thoughtful
Man in glasses reads a book titled "Groundwork for the Metaphysics of Morals" while sitting in a modern chair, appearing thoughtful

u/popejohnsmith

4."Good comedy. There are so many great comedians who play dumb and make jokes about how stupid they are, but I think you have to be above average intelligence to be a great comedian."

Person wearing a shiny headdress with spikes and beaded earrings, smiling with a celestial background
Person wearing a shiny headdress with spikes and beaded earrings, smiling with a celestial background

u/CassTeaElle

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"Humor is the highest form of language. Robin Williams was a great comedian, and he was brilliant."

u/Labradawgz90

"I use Conan O'Brian as my example. The guy plays it up that he's a clutz but graduated Harvard and knows how to make a joke about anything."

u/TheflavorBlue5003

"Tina Fey said that you could tell which people in a crowd were smart by what they laughed at. I've found that to be true."

u/GreenElementsNW

5."People who ask perceptive questions which show a deep and considered comprehension of what's being said and meant, and how the information interacts with the wider picture."

A young girl with long hair enthusiastically raises her hand in a classroom setting, wearing a school uniform with a crest
A young girl with long hair enthusiastically raises her hand in a classroom setting, wearing a school uniform with a crest

u/Difficult_Falcon1022

"During my PhD, I noticed that really smart people could listen to a lecture on a topic that was tangential to their research and still ask insightful questions."

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u/Juls7243

"My next-door neighbor's 4-year-old son would ask me what I was doing then why. I'd explain what I was doing, and he'd continue to ask, 'Why?' I'd continue to answer until he got the reason into his head.

The next-door neighbor apologized, but I told him that his son was just showing intelligence by getting to the root cause of his curiosity."

u/charlie2135

6."They talk to themselves a lot but not in a weird way. More like they’re processing stuff to remember and later on apply it."

A woman sits at a table, focused on reading a piece of paper, with parcels and clothing nearby
A woman sits at a table, focused on reading a piece of paper, with parcels and clothing nearby

u/Shack24_

7."The fact that they're not letting on how smart they are."

A woman in a stylish pink dress stands in a courtroom, looking concerned. A seated person behind her appears shocked, with a hand covering their mouth
A woman in a stylish pink dress stands in a courtroom, looking concerned. A seated person behind her appears shocked, with a hand covering their mouth

u/901Soccer

8."They're kinder. Kindness is just smart."

Two people smiling while sitting side by side, both in sweaters, creating a friendly and joyful atmosphere
Two people smiling while sitting side by side, both in sweaters, creating a friendly and joyful atmosphere

u/DogAlienInvisibleMan

9."The sharpest guy I ever worked with once said, 'A trained monkey could do my job,' as he was converting my measured values to hexadecimal in his head as he input adjusted CNC parameters."

Person with glasses gazes out a rainy window, wearing a coat and tie, appearing thoughtful
Person with glasses gazes out a rainy window, wearing a coat and tie, appearing thoughtful

u/ArchaicBrainWorms

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10."Very quick wit. You have to be smart to process and deliver."

Person on phone wearing a patterned, oversized jacket in an indoor setting, smiling
Person on phone wearing a patterned, oversized jacket in an indoor setting, smiling

u/Sarahclaire54

11."Emotionally smart people can share information that reassures other people before the other person even brings it up."

Animated characters look shocked while observing a colorful control panel in a futuristic setting
Animated characters look shocked while observing a colorful control panel in a futuristic setting

u/CompactOwl

12."Someone who can explain a very complex topic to a room full of lay-people is usually pretty good at what they do."

A teacher stands on a desk in a classroom, addressing students who are seated and appear engaged. An American flag and a globe are in the background
A teacher stands on a desk in a classroom, addressing students who are seated and appear engaged. An American flag and a globe are in the background

u/lucidzfl

13."I subscribe to the idea that there are multiple types of intelligence. I have a mate who didn't finish high school, but he can fix and build anything. Engines just run better if he's around them. He has total mastery of the physical world. You'll never convince me that he's not brilliant, even though he hasn't read a book since he was a kid."

Two people in a courtroom; one in a suit, the other in a sequined top, engaged in an animated discussion
Two people in a courtroom; one in a suit, the other in a sequined top, engaged in an animated discussion

u/CommissionerOfLunacy

"My husband is like this. He bunked school so often and barely passed, but he can diagnose a problem with an engine in a two-minute video call. I don't think he's met an engine and steering wheel combo he hasn't mastered. I'm not biased cause I'm married to him; we have friends who have their own auto shops who ask him for advice. His grandmother always says he was born with a steering wheel in his hands. But don't put him in front of a book."

u/Party_Rooster7303

14."The more you know, the more aware you are of the things you don't know."

Person crouching on floor with papers scattered around, wearing a casual button-up shirt and pants, looking intently at the papers
Person crouching on floor with papers scattered around, wearing a casual button-up shirt and pants, looking intently at the papers

u/HeistGeist

15."Really smart people tend to be interested in many different topics. They are naturally curious about many different things."

Three lacrosse players in sports attire sit on a bench. One is in a suit with a clipboard, the other two wear jerseys and hold lacrosse equipment
Three lacrosse players in sports attire sit on a bench. One is in a suit with a clipboard, the other two wear jerseys and hold lacrosse equipment

u/Labradawgz90

16."Rather than getting frustrated when they don't know something, they get excited. I had a chemistry professor in college who was SO smart, and when somebody asked a question she couldn't answer, her eyes lit up as she said, 'I don't know. Let's find out!' To her, not knowing something was just an opportunity to learn something new."

Person wearing patterned dress, reading a book while seated in a modern setting with wooden and blue background accents, and two mugs on a table
Person wearing patterned dress, reading a book while seated in a modern setting with wooden and blue background accents, and two mugs on a table

u/echoes122

17."If they begin their answer to most questions with something like, 'I don’t really know...' or 'I don’t have all the details...' or 'I’m sure someone more knowledgeable can enlighten you on this…'"

Person sitting at a picnic table outdoors, holding a pen and looking thoughtful. A brown bag is on the table
Person sitting at a picnic table outdoors, holding a pen and looking thoughtful. A brown bag is on the table

u/joyful_fountain

"I used to know a very smart guy, and whenever he said, 'I could be wrong, but...' you know he was 100% positive and 100% correct."

u/AngelicTinkerbell

18."Shakespeare wrote, 'The fool considers himself to be wise, while the wise man considers himself to be a fool.' Somebody who knows and understands that is smart."

Person in casual jeans, a blue shirt, and a jacket stands sock-footed at night in a parking lot beside a pair of shoes
Person in casual jeans, a blue shirt, and a jacket stands sock-footed at night in a parking lot beside a pair of shoes

u/AlaskanSnowWorm

19."They seem lucky."

Person with long hair sits thoughtfully at a table indoors, with another blurred figure in the background
Person with long hair sits thoughtfully at a table indoors, with another blurred figure in the background

u/gradeahonky

"Skill is sometimes disguised as luck."

u/skexzies

20."A person who makes decisions that are perceived by many as 'strange' (taking unconventional paths, seemingly descending the career ladder, and so on)."

Person sitting on a sandy beach, reading a book, with greenery and a cloudy sky in the background
Person sitting on a sandy beach, reading a book, with greenery and a cloudy sky in the background

u/AnthaDragon

21."The biggest thing for me is speed of learning and automatically is able to draw connections from one seemingly distant discipline to another unrelated discipline. Being able to extrapolate wide and deep."

People stand in an office: one in casual wear, the other in business attire, with a focused expression. A person is in the background
People stand in an office: one in casual wear, the other in business attire, with a focused expression. A person is in the background

u/DrinksAreOnTheHouse

22.And finally, "All of the above and also: depression."

Man in casual blazer and shirt, holding a cane, stands in front of an elevator directory sign
Man in casual blazer and shirt, holding a cane, stands in front of an elevator directory sign

u/Cancel-Queasy

"It’s not that everyone with depression has a high IQ, or that everyone with a high IQ has depression, but there is empirical evidence suggesting that intelligent people are more prone to depression than people of average or low intelligence."

u/mellotangelo

So, what do you think? Did these ring true to you? Are there any other signs that someone is way smarter than they let on that you didn't see on this list?

Let us know in the comments!

Note: Some submissions have been edited for length and/or clarity.