disagreeable (adj.)
- abominable
 - abrupt
 - annoying
 - antagonistic
 - antipathetic
 - bad-tempered
 - bearish
 - bitchy
 - bitter
 - blunt
 - brusque
 - cantankerous
 - churlish
 - clashing
 - contradictory
 - contrary
 - crabbed
 - cranky
 - cross
 - cross-grained
 - crusty
 - curt
 - cussed
 - discordant
 - discourteous
 - discrepant
 - disgusting
 - disharmonious
 - dislikable
 - disobliging
 - displeasing
 - disproportionate
 - dissident
 - dissonant
 - distasteful
 - distressing
 - disturbing
 - divergent
 - excitable
 - feisty
 - fractious
 - fretful
 - grating
 - grouchy
 - hostile
 - huffish
 - huffy
 - ill
 - ill-humored
 - ill-mannered
 - ill-tempered
 - immiscible
 - impolite
 - incompatible
 - inharmonious
 - inhospitable
 - irascible
 - irritable
 - jangling
 - jarring
 - mean
 - morose
 - nasty
 - nauseating
 - nauseous
 - negative
 - noxious
 - objectionable
 - obnoxious
 - odious
 - offensive
 - ornery
 - peevish
 - perverse
 - pettish
 - petulant
 - querulous
 - repellent
 - repugnant
 - repulsive
 - revolting
 - rotten
 - rude
 - short
 - sickening
 - snappish
 - snappy
 - sour
 - spiteful
 - splenetic
 - sulky
 - sullen
 - testy
 - thankless
 - ugly
 - unaffectionate
 - unappealing
 - unappetizing
 - unattractive
 - uncivil
 - uncompassionate
 - uncongenial
 - uncooperative
 - uncordial
 - undesirable
 - unfriendly
 - ungracious
 - unhappy
 - unharmonious
 - uninviting
 - unkind
 - unkindly
 - unlikable
 - unloving
 - unpalatable
 - unpleasant
 - unpleasing
 - unsavory
 - unsympathetic
 - unsympathizing
 - unwelcome
 - variant
 - waspish
 - whiny
 - woeful
 
"And this," said Caesar, "you know, young man, is more disagreeable for me to say than to do."