unsympathetic (adj.)
- arctic
- autistic
- blunt
- bowelless
- callous
- catatonic
- chilly
- cold
- cold-blooded
- coldhearted
- cool
- cruel
- disagreeable
- disinterested
- dislikable
- dispassionate
- displeasing
- drugged
- dull
- emotionless
- flinty
- frigid
- frosted
- frosty
- frozen
- halfhearted
- hard
- hard-boiled
- hardhearted
- harsh
- heartless
- icy
- ill
- immovable
- impassive
- inclement
- indifferent
- inexorable
- inhospitable
- insusceptible
- lukewarm
- merciless
- obdurate
- objective
- obtuse
- passionless
- pitiless
- relentless
- remorseless
- repellent
- repugnant
- ruthless
- self-absorbed
- soulless
- spiritless
- unaffectionate
- uncompassionate
- uncongenial
- uncordial
- unemotional
- unfeeling
- unforgiving
- ungracious
- unimpassioned
- unimpressionable
- unkind
- unkindly
- unlikable
- unloving
- unmerciful
- unpitying
- unpleasant
- unpleasing
- unremorseful
- unresponsive
- unsusceptible
- unsympathizing
- untouchable
- unyielding
