Synonyms of imperceptible
undetectableDictionary • His hesitation was almost imperceptible.
small • She is small for her age.
minute • Only a minute amount is needed.
tiny • Though she was tiny, she had a very loud voice.
invisible • The lines were so fine as to be nearly invisible.
microscopic • microscopic fibres of protein
inaudible • His voice was almost inaudible.
infinitesimal • mineral substances present in infinitesimal amounts in the soil
indiscernible • The signs were so concealed as to be almost indiscernible.
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impalpable (formal)imperceptible, esp to the touch
inaudibleIf a sound is inaudible, you are unable to hear it.
• His voice was almost inaudible.
indiscernibleincapable of being discerned
• The signs were so concealed as to be almost indiscernible.
Thesaurus for imperceptible from the Collins English Thesaurus
too slight, subtle, gradual, etc, to be perceived