obtuse (adj.)

• abrupt
• arctic
• asleep
• autistic
• benumbed
• bluff
• blunt
• blunted
• boneheaded
• callous
• catatonic
• chilly
• cloddish
• cold
• cold-blooded
• coldhearted
• cool
• dead
• deadened
• dense
• dim
• dim-witted
• dispassionate
• doltish
• dopey
• drugged
• dull
• dulled
• edgeless
• emotionless
• frigid
• frosted
• frosty
• frozen
• heartless
• heavy
• icy
• immovable
• impassive
• insensate
• insensible
• insensitive
• insentient
• insusceptible
• loutish
• lumpish
• numb
• numbed
• oafish
• obdurate
• objective
• passionless
• pointless
• rounded
• self-absorbed
• simple
• slow
• slow-witted
• sluggish
• smoothed
• soulless
• spiritless
• stolid
• thick
• thick-skinned
• thickheaded
• unaffectionate
• unemotional
• unfeeling
• unimpassioned
• unimpressionable
• unloving
• unperceptive
• unpointed
• unresponsive
• unsharpened
• unsusceptible
• unsympathetic
• untouchable
• wooden