crazy, daft (informal) eccentric, erratic, gonzo (slang) goofy (informal) irrational, loony (slang) nutty (slang) odd, oddball (informal) off-the-wall (slang) outré, screwy (informal) silly, unpredictable, wacko or whacko (informal) wild, zany
English Collins Dictionary - English synonyms & Thesaurus
If you say that someone is wacko, you are saying in an unkind way that they are strange and eccentric.
Lampley was obviously completely wacko.
Translation English - Cobuild Collins Dictionary
Add your entry in the Collaborative Dictionary.
- Create your own vocabulary list
- Contribute to the Collaborative Dictionary
- Improve and share your linguistic knowledge
"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"