Answer: underacted

AnswerCrossword Clue
UNDERACTEDHardly emoted
UNDERACTEDCertainly didn't emote
UNDERACTEDPerformed with subtlety
underactedAct a part in a play or film in an overly restrained or unemotional way
underactedUNDERACT, to act subtly and with restraint