| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | silly |
| Synonyms: | airbrained, airheaded, daffy, dippy, dipsy, dizzy*, dopey, eccentric, empty, giddy, goofy*, inane, kooky, rattlebrained, scatterbrained |
| Main Entry: | bird-brained |
| Part of Speech: | adjective |
| Definition: | giddy |
| Synonyms: | addle-brained, addle-headed, addle-pated, airheaded, empty-headed, featherbrained, flighty, harebrained, rattlebrained, rattlepated, scatterbrained, scatty, silly |