surliest

Least pleasant disposition

Surliest is the superlative of surly—the most bad-tempered, unfriendly, or rudely ill-humored: Even the surliest clerk at the DMV cracked a smile.

Surly suggests a hostile unwillingness to be pleasant or cooperative.

grumpy

grumble

Low, discontented murmuring

grouchy · cantankerous · sulky · morose · sullen · peevish · petulant · testy · touchy · moody

unfriendly

cold

Low temperature state

unapproachable · inhospitable · unwelcoming · disagreeable · misanthropic · antisocial · unsociable · forbidding · off-putting · boorish

hostile

aggressive

Hostile and confrontational

confrontational · defiant · pugnacious · quarrelsome · truculent · rancorous · contentious · bristling · snarling · snapping

Opposites
demeanor/temperament

surliestfriendliest

Most warmly sociable

warmest · sunniest · sweetest

Family

surlier

Familiarity
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Profile
Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G