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im·per·cep·ti·ble

imperceptible

 
 
pronunciation:
Im pr sep t bl
features:
Word Combinations (adjective)
part of speech: adjective
definition 1: so gradual or subtle as to be unnoticed or unnoticeable.
The difference in taste was so slight as to be almost imperceptible.
synonyms:
inconspicuous, subtle, unapparent, unnoticeable
antonyms:
marked, noticeable, obvious, pronounced
similar words:
elusive, insignificant, negligible
definition 2: not capable of being perceived or apprehended.
Dogs can hear sounds that are imperceptible to humans.
synonyms:
indistinguishable, invisible, unappreciable
antonyms:
perceivable, perceptible
similar words:
hidden, incomprehensible, indiscernible
Word Combinations  About this feature
adverb + (adj.)imperceptible almost, but, gently, gradually, initially, nearly, otherwise, slowly, suddenly, therefore, virtually
(adj.)imperceptible + noun adjustment, agent, alteration, altitude, animality, breeze, change, corner, current, degree, dot, drift, edge, expression, eye, fashion, flavor, flick, gesture, hell, hole, horizon, human, image, impact, manner, motion, movement, nod, observer, odor, others, pause, photon, pond, progress, progression, relief, ripple, rustle, shake, shift, shrug, shudder, sigh, sign, signal, sky, slope, sound, speed, temperature, undercurrent, undulation, voice, wave, whisper, wrist [See all][See only the most frequent]
derivations: imperceptibly (adv.), imperceptibility (n.), imperceptibleness (n.)