Answer: transpires

AnswerCrossword Clue
TRANSPIRESBecomes known by degrees.
TRANSPIRESDevelops
transpiresTRANSPIRE, to give off as vapour; to exhale; to emit through the skin
transpiresProve to be the case
transpires(of a secret or something unknown) Come to be known; be revealed
transpires(of a plant or leaf) Give off water vapor through the stomata
transpiresOccur; happen