SAT GRE TOEFL imperceptible Definition Too slight or gradual to be seen or noticed. Example "There was an imperceptible shift in the wind direction." Sign in to save SAT Quiz → GRE Quiz → TOEFL Quiz → ← imperative imperial → Study tips featuring "imperceptible" Let the Argument Reveal Unfamiliar Word Meanings Group Words Together by Emotional Tone Map Each Word Into a Connected Network Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal