(1):

(a.) Having life, in opposition to dead; living; being in a state in which the organs perform their functions; as, an animal or a plant which is alive.

(2):

(a.) Exhibiting the activity and motion of many living beings; swarming; thronged.

(3):

(a.) Sprightly; lively; brisk.

(4):

(a.) Of all living (by way of emphasis).

(5):

(a.) Having susceptibility; easily impressed; having lively feelings, as opposed to apathy; sensitive.

(6):

(a.) In a state of action; in force or operation; unextinguished; unexpired; existent; as, to keep the fire alive; to keep the affections alive.