Consciousness

google

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late 16th century (in the sense ‘being aware of wrongdoing’): from Latin conscius ‘knowing with others or in oneself’ (from conscire ‘be privy to’) + -ous.

wiktionary

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conscious +‎  -ness

etymonline

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consciousness (n.)

1630s, "internal knowledge," from conscious + -ness. Meaning "state of being aware of what passes in one's own mind" is from 1670s; meaning "state of being aware" of anything is from 1746. Consciousness-raising is attested from 1968.