Answer: operative

AnswerCrossword Clue
OPERATIVESecret agent
operativeFunctioning; having effect
operative(of a word) Having the most relevance or significance in a phrase or sentence
operativeOf or relating to surgery
operativehaving the power of operating or acting / a worker, esp one with special skills
OPERATIVEPrivate detective
OPERATIVEKey
OPERATIVESleuth
OPERATIVEIn working order
OPERATIVEPrivate eye
OPERATIVESpy
OPERATIVEWorking
OPERATIVEAgent or artisan.
OPERATIVEDetective.
OPERATIVEAgent.
OPERATIVEGarment worker or detective.
OPERATIVEFBI agent.
OPERATIVEAgent
OPERATIVEFunctioning effectively
OPERATIVEUndercover agent