unfriendlyThe crowd was unfriendly and dangerous.
coolShe was very cool towards his new wife.
coldShe's a cold, heartless woman.
icyHe gave me an icy stare.
glacialHer reception of him was glacial.
frostyHe gave the neighbour's misbehaving children a frosty look before going indoors.
distantMy father was very distant, but I suppose all men of his generation were.
aloofThe dowager was aloof and uninterested in conversation.
standoffishinformaldisapprovingNow is not the time to be so standoffish.
offishUKShe's the more offish of the two sisters.
dourHe's a dour old man who enjoys nothing more than complaining.
sourDon't be so sour - cheer up and join the party!
pricklyinformalHe's normally easy-going, but if you ask him about his ex-wife, he gets rather prickly.
hostileThe opposition candidate is quite hostile to the current Parliament.
antagonisticHe was dismissed for being combative and antagonistic towards his supervisor.