Synonyms for Nutty

Synonyms starting with letter O

• oddball

  eccentric
• odd

  mentally unbalanced
• of unsound mind

  mad
• out to lunch

  mad
• off the wall
• off

  sane
• offbeat
• off-the-wall
• outlandish
• outrageous
• obsessed
• overboard
• off-center
• out in left field
• overexcited
• off center
• out of your mind

  mad
• off your head

  mad
• off your trolley

  mad
• off your rocker
• off your nut
• off your chump
• off the air
• out-to-lunch
• out of all reason
• out there
• off the rails
• off the track
• off the trolley
• off the hinges
• off in the upper story
• out of one's mind
• off one's head
• off the deep end
• obsessive-compulsive
• oafish
• obtuse
• opaque