imperceptible
1 synonym and 1 antonym for imperceptible, grouped by meaning and by how common each one is.
Adj — So small that it cannot be noticed or measured.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
unperceivable
Antonyms
Etymology
Inherited from Middle English imperceptible, from Middle French imperceptible and its source Medieval Latin imperceptibilis. By surface analysis it breaks down as im- plus perceptible.
Full origin of imperceptible →