imperceptibleadjective
uk/ˌɪm.pəˈsep.tə.bəl/us/ˌɪm.pɚˈsep.tə.bəl/unable to be noticed or felt because of being very slight:
She heard a faint, almost imperceptible cry.
Thesaurus: synonyms and related words
Indistinct & invisible
- blind
- blur
- blurred
- inconspicuous
- indiscernible
- indistinct
- invisible
- melt
- melt (away) into sth
- neutral
- not see hide nor hair of sb idiom
- see
- sink without (a) trace idiom
- smudged
- subtle
- subtlety
- unclear
- unseen
- vague
- wraith
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You can also find related words, phrases, and synonyms in the topics:
Extremely small
imperceptibly
adverb uk/ˌɪm.pəˈsep.tə.bli/us/ˌɪm.pɚˈsep.tə.bli/
Gradually, almost imperceptibly, her condition had worsened.