Existent, animate (5)
I believe the answer is:
alive
This clue is a double definition.
'existent' is the first definition.
(similar in meaning)
'animate' is the second definition.
(synonyms)
(Other definitions for alive that I've seen before include "Animate, breathing" , "Extant" , "Functioning" , "Go or walk briskly" , "Aware" .)