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.) In a state of action; in force or operation; unextinguished; unexpired; existent; as, to keep the fire alive; to keep the affections alive.
3. (a.) Exhibiting the activity and motion of many living beings; swarming; thronged.
4. (a.) Sprightly; lively; brisk.
5. (a.) Having susceptibility; easily impressed; having lively feelings, as opposed to apathy; sensitive.