WordNet sense 1 (being susceptible to the attitudes, feelings, or circumstances of others):

sensitive

WordNet sense 2 (having existence or being or actuality):

existent, existing

WordNet sense 3 (full of life and energy):

lively

WordNet sense 4 ((usually followed by `to') showing acute awareness; mentally perceptive):

alert, awake

WordNet sense 5 ((sometimes followed by `of') having or showing knowledge or understanding or realization or perception):

cognizant, cognisant

WordNet sense 6 (full of spirit):

vital

WordNet sense 7 (made lively or spirited):

spirited

WordNet sense 8 (having life or vigor or spirit):

animated

WordNet sense 9 (capable of life or normal growth and development):

viable

WordNet sense 10 (possessing life):

live, live

WordNet sense 11 ((of e.g. volcanos) capable of erupting):

active