wacko
Wacko (adjective) means Eccentric or irrational in a way that's amusing rather than alarming. Example: “His wacko theories about the moon landing kept us laughing all night.”
How to use wacko
Learner’s notesIn plain EnglishA playful word for someone or something a bit crazy or over-the-top.
Informal and can be mildly mocking; use with care about people, not just ideas.
Word forms
more wacko comparative, wackos plural, wackoes plural, most wacko superlative
Fill the gap
Can you complete this real example?
His _____ theories about the moon landing kept us laughing all night.
Etymology
Formed from "wack(y)" plus the informal "-o" ending, the same pattern seen in words like "cheapo" or "weirdo".
Synonyms
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Rhymes for wacko
See all rhymes for wacko →Frequently asked questions
What does “wacko” mean?
The word “wacko” means eccentric or irrational in a way that's amusing rather than alarming. In plain terms, a playful word for someone or something a bit crazy or over-the-top.
How do you pronounce “wacko”?
“Wacko” is pronounced WA-koh (/ˈwæ.koʊ/ in IPA).
How do you use “wacko” in a sentence?
Here is “wacko” used in a sentence: “His wacko theories about the moon landing kept us laughing all night.”
What part of speech is “wacko”?
Depending on how it is used, “wacko” can be an adjective and a noun.
How many meanings does “wacko” have?
“Wacko” has 2 distinct senses listed in this dictionary. The most common is: eccentric or irrational in a way that's amusing rather than alarming.