1

wacko

play
adjective \ˈwa-(ˌ)kō\
variants: or less commonly

Definition of wacko

  1. :  wacky

Recent Examples of wacko from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'wacko'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of wacko

by alteration


2

wacko

noun
variants: or less commonly

Definition of wacko

  1. :  a person who is wacky; also :  psycho

Examples of wacko in a Sentence

  1. She's nice but her sister's a real wacko.

  2. some wacko has been sending the actress increasingly disturbing letters

First Known Use of wacko

1938


WACKO Defined for English Language Learners

wacko

noun

Definition of wacko for English Language Learners

  • : a person who is crazy or very strange and unusual


Learn More about wacko


Seen and Heard

What made you want to look up wacko? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to become worse as time passes

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!