noun Uncommon

weirdo

WEER-doh

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Weirdo (noun) means an odd or eccentric person, especially one who behaves in a way others find unsettling. Example: “He got some strange looks from the other passengers, like they thought he was a weirdo.”

noun

An odd or eccentric person, especially one who behaves in a way others find unsettling.

"He got some strange looks from the other passengers, like they thought he was a weirdo."

"Don't be such a weirdo about it — just ask her out."

How to use weirdo

Learner’s notes

In plain EnglishAn informal, often mildly insulting word for someone who acts strangely.

When to use it

Casual and can be affectionate between friends or genuinely dismissive depending on tone — use carefully with strangers.

Common pairings

a total weirdo act like a weirdo don't be a weirdo

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C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

C1 · Advanced nonchalant Casually calm and relaxed; unconcerned.

Internet slang delulu Delusional — believing something against the odds.

Etymology nostalgia Greek nostos “return home” + algos “pain”.

C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

C1 · Advanced nonchalant Casually calm and relaxed; unconcerned.

Internet slang delulu Delusional — believing something against the odds.

Etymology nostalgia Greek nostos “return home” + algos “pain”.

Word forms

Plural: weirdoes, weirdos

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He got some strange looks from the other passengers, like they thought he was a _____.

Etymology

Formed from "weird" plus the informal suffix "-o," which turns an adjective into a label for a type of person (as in "cheapo" or "wino"). First recorded in American English in the early 1950s.

· First attested 1950

Class of 1950 weirdo joined the language around 1950.

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Synonyms

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crazy creep spook loony looney nutcase weirdy weirdie

Related words

friend crazy fantastic ghost insane mouse nuts spy

Rhymes for weirdo

hairdo

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Frequently asked questions

What does “weirdo” mean?

The word “weirdo” means an odd or eccentric person, especially one who behaves in a way others find unsettling. In plain terms, an informal, often mildly insulting word for someone who acts strangely.

How do you pronounce “weirdo”?

“Weirdo” is pronounced WEER-doh (/ˈwɪəɹ.doʊ/ in IPA).

How do you use “weirdo” in a sentence?

Here is “weirdo” used in a sentence: “He got some strange looks from the other passengers, like they thought he was a weirdo.”

What part of speech is “weirdo”?

“Weirdo” is a noun.

Where does the word “weirdo” come from?

The word “weirdo” dates back to around 1950. Formed from "weird" plus the informal suffix "-o," which turns an adjective into a label for a type of person (as in "cheapo" or "wino"). First recorded in American English in the early 1950s.

Is “weirdo” a common word?

“Weirdo” is an uncommon word in modern English.

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