imperceptive

[im-per-sep-tiv]
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Origin of imperceptive

First recorded in 1655–65; im-2 + perceptive
Related formsim·per·cep·tiv·i·ty, im·per·cep·tive·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for imperceptive

imperceptive

adjective Also: impercipient (ˌɪmpə-ˈsɪpɪənt)
  1. lacking in perception; obtuse
Derived Formsimperception, nounimperceptively, adverbimperceptivity, imperceptiveness or impercipience, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012