■ adjective
1》 aware of and responding to one's surroundings.
2》 (usu. ~ of ) having knowledge of something.
↘[in combination ] concerned about a matter: security-~.
3》 deliberate and intentional: a ~ effort.
↘(of the mind or a thought) directly perceptible and under one's control.
Derivatives
~ly adverb
Origin
C16: from L. conscius 'knowing with others or in oneself' (from conscire 'be privy to') + -ous .