concurrency (noun) fitness: appropriateness
Sinonime: bastard, bluffer, charlatan,
cheat,
counterfeit, crook, deceiver, double-dealer, fake, forger, four-flusher, hoaxer, horse trader, impostor, mechanic, mountebank,
phony, play actor, pretender, quack, racketeer,
sham*, shark, swindler
Antonime: inappropriateness, unsuitability