(a.) See Luny.

absurd apish asinine balmy bananas barmy bats batty beany bedlamite befooled beguiled besotted bonkers brainless buffoonish buggy bughouse bugs cockeyed crackers crazy credulous cuckoo daffy daft dazed dement dippy dizzy doting dotty dumb fatuitous fatuous flaky flipped fond fool foolheaded foolish freaked-out fruitcakey fruity fuddled futile gaga goofy gulled harebrained haywire idiotic imbecile inane inept infatuated insane just plain nuts kooky loon loopy mad madman maniac maudlin moronic non compos nut nuts nutty off the hinges off the track off the wall potty preposterous round the bend sappy screwball screwballs screwy senseless sentimental silly slaphappy stupid thoughtless wacky wet witless