| Part of Speech | Definition | |
| Adjective | 1. Imperceptible.[Websters]
2. Being insensible. [Eve - graph theoretic] 3. Being impassive. [Eve - graph theoretic] 4. Being dull. [Eve - graph theoretic] 5. Being apathetic. [Eve - graph theoretic] 6. Being callous or hard. [Eve - graph theoretic] 7. Rarely used base adjective of the adverb imperceivably.[Eve - graph theoretic] | |
| Adverb Form (imperceivably) | 1. Virtually never used adverbial inflection of the rarely used adjective imperceivable.[Eve - graph theoretic] | |
Source: Webster's Revised Unabridged Dictionary (1913), compiled from various sources, under license. | Top | |
Date "IMPERCEIVABLE" was first used in popular English literature: sometime before 1914. (references) |
| Note: Imperceivable \Im`per*ceiv"a*ble\, adjective. Imperceptible.. (references) |
