1. (superl.) Not pointed or acute; blunt; -- applied esp. to angles greater than a right angle, or containing more than ninety degrees.

2. (superl.) Not having acute sensibility or perceptions; dull; stupid; as, obtuse senses.

3. (superl.) Dull; deadened; as, obtuse sound.

abrupt affectless anesthetized arctic asleep autistic benumbed bluff blunt blunt-edged blunt-ended blunt-pointed blunt-witted blunted bluntish boneheaded callous catatonic chill chilly cloddish cold cold as charity cold-blooded coldhearted cool dead deadened dense dim dim-witted dispassionate doltish dopey drugged dull dull of mind dull-edged dull-headed dull-pated dull-pointed dull-witted dulled dullish edgeless emotionally dead emotionless faired fat-witted frigid frosted frosty frozen gross-headed heartless heavy hebetudinous icy immovable impassible impassive imperceptive impercipient inexcitable insensate insensible insensitive insentient insusceptible loutish lumpish mentally retarded nonemotional numb numbed oafish obdurate objective out of touch passionless pointless rounded self-absorbed simple slow slow-witted sluggish smoothed soulless spiritless stolid thick thick-brained thick-headed thick-pated thick-skinned thick-witted thickheaded thickskulled unaffectionate unedged unemotional unfeeling unfelt unimpassioned unimpressionable unloving unpassionate unperceptive unpointed unresponding unresponsive unsharp unsharpened unsusceptible unsympathetic untouchable wooden