English / word
imperceptible
adjective C1MEANING IN ENGLISH
So slight, gradual, or subtle as to be not perceived.
In context
01
The changes in his behavior were imperceptible at first.
Synonyms
unnoticeable,undetectable,subtle
Antonyms
noticeable,perceptible,obvious
Collocations
almost imperceptible,imperceptible change,imperceptible nod