“+ adjective
Etymology: un- (I) + stuck, past participle of stick
1. : released from being glued, fastened, or bound
glancing through the photographs one day … she had found that one beginning to come unstuck — Elizabeth Taylor
the gears locked in second and would not come unstuck — Herbert Passin
2. : brought to a state of disorder, disorganization, or incoherence
the government's stabilization program … has recently shown signs of coming unstuck — New York Times
price programs became unstuck because little grain was available — Newsweek
projects were always coming unstuck at the last minute — Bruce Catton