a·live 
(ə-līv)
(ə-līv)adj.
Idiom: 1. Having life; living. See Synonyms at living.
2. In existence or operation; active: keep your hopes alive.
3. Full of living or moving things; abounding: a pool alive with trout.
4. Full of activity or animation; lively: a face alive with mischief.
5. Sports In play; live: a foul called when the ball is alive.
alive to
Aware of; sensitive to: alive to the moods of others.
[Middle English : a-, in a specified state; see A-2 + live, life (from Old English līf; see LIFE).]
a·liveness n.