conscious (adj.)

c. 1600, "knowing, privy to" (poetic), from Latin conscius "knowing, aware," from conscire "be (mutually) aware," from assimilated form of com "with," or "thoroughly" (see con-) + scire "to know" (see science). The Latin word probably is a loan-translation of Greek syneidos.

The sense of "knowing or perceiving within oneself, sensible inwardly, aware" is from 1630s, perhaps a shortening of conscious to oneself (1620s). Also compare the Latin sense evolution in conscience. From 1650s as "aware (of a fact)." Sense of "active and awake, endowed with active mental faculties" is from 1837. Related: Consciously.

Origin and meaning of conscious

updated on October 13, 2021

Definitions of conscious from WordNet

conscious (adj.)
(followed by `of') showing realization or recognition of something; "the careful tread of one conscious of his alcoholic load"- Thomas Hardy;
few voters seem conscious of the issue's importance
conscious of having succeeded
conscious (adj.)
intentionally conceived;
a conscious policy
a conscious effort to speak more slowly
Synonyms: witting
conscious (adj.)
knowing and perceiving; having awareness of surroundings and sensations and thoughts;
remained conscious during the operation
became conscious that he was being followed
conscious of his faults
Etymologies are not definitions. From, not affiliated with etymonline.