loony
1 of 2adjective/ˈluni/
Forms:loonier,looniest
1
describing someone or something exhibiting foolish characteristics
C1- She came up with a loony idea to build a roller coaster in her backyard.
- His loony behavior at the party embarrassed everyone who was there.
- The teacher dismissed his loony explanation for why he didn't do his homework.
- The conspiracy theorist's loony beliefs about aliens were widely ridiculed.
- The candidate's loony promises during the campaign did not win over many voters.