Sentient

1. (a.) Having a power of sensation and perception; as, the sentient extremities of nerves, which terminate in the various organs or tissues.

2. (n.) One who has the faculty of perception; a sentient being.

Thesaurus Entries

alive, alive to, au courant, awake, aware, cognizant, conscious, conversant, emotionable, feeling, impressible, impressionable, impressive, knowing, open, perceptive, reactive, receptive, responsive, sensible, sensile, sensitive, sensitive to, susceptible, susceptive, witting