| ass |
a person who acts or appears stupid or silly. [1/2 definitions] |
| blunder |
a silly or careless mistake. [2/3 definitions] |
| caper1 |
a playful trick or adventure; silly act. [1/3 definitions] |
| carry on |
to behave, especially verbally, in a foolish or silly way. [1/2 definitions] |
| clown |
a person who acts in a silly manner. [2/3 definitions] |
| crazy |
not reasonable or practical; silly; foolish. [1/4 definitions] |
| dizzy |
(informal) foolish or silly. [1/4 definitions] |
| fool |
a person who has been or is likely to be tricked or made to look silly. [2/6 definitions] |
| foolish |
not having good sense; silly. |
| frivolous |
likely to be too silly; lacking sense. |
| giddy |
not serious; silly. [1/2 definitions] |
| giggle |
to laugh in a silly or nervous way. [2 definitions] |
| goose |
(informal) a silly or stupid person. [1/4 definitions] |
| horse around |
to play in a silly or foolish way; to be very active. |
| insane |
very foolish or silly. [1/2 definitions] |
| juvenile |
foolish and silly; childish; not mature. [1/4 definitions] |
| make a spectacle of oneself |
to behave in a silly or foolish way in public. |
| make light of |
to treat as or consider silly or not important. |
| nonsense |
rude or silly behavior. [1/2 definitions] |
| ridiculous |
silly; foolish; laughable. |
| yap |
(slang) to talk in a loud and silly way. [1/3 definitions] |