1. ((informal) stupid, slow witted or dull) stupid
   - blockheaded, boneheaded, duncical, duncish, fatheaded, loggerheaded, thick, thickheaded, thick-skulled, wooden-headed, thick-witted

See also: stupid

• oculus sinister
• Ocyurus
• Ocyurus chrysurus
• OD
• odalisk
• odalisque
• odd
• odd fellow
• odd fish
• Odd Hassel
• odd lot
• odd man out
• odd one out
• odd-even check
• odd-job
• odd-job man
• odd-leg caliper
• odd-pinnate
• odd-pinnate leaf
• odd-toed ungulate
• oddball
• oddish
• oddity
• oddly
• oddment