One entry found for imperceptible.

Main Entry: im·per·cep·ti·ble
Pronunciation: im-pr-sep-t-bl
Function: adjective
1 : not noticeable : not perceptible by a sense or by the mind <one whose beauty was imperceptible to others>
2 : hardly noticeable : very small or gradual <an imperceptible smile>
- im·per·cep·ti·bly /-bl/ adverb