gaga (adj.)

• apish
• asinine
• balmy
• barmy
• bats
• batty
• beguiled
• besotted
• bonkers
• brainless
• buffoonish
• buggy
• cockeyed
• crackers
• crazy
• credulous
• daft
• dazed
• dizzy
• doting
• dotty
• dumb
• empty-headed
• fatuous
• featherbrained
• flaky
• fond
• foolish
• frivolous
• fruity
• fuddled
• futile
• giddy
• goofy
• harebrained
• haywire
• idiotic
• imbecile
• inane
• inept
• infatuated
• insane
• kooky
• loony
• loopy
• mad
• maudlin
• moronic
• nuts
• nutty
• potty
• rattlebrained
• rattlepated
• sappy
• scatterbrained
• screwball
• screwy
• senseless
• sentimental
• silly
• slaphappy
• stupid
• thoughtless
• wacky
• wet
• witless