Answer: wildcard

AnswerCrossword Clue
WILDCARDA deuce used as an ace, say
WILDCARDJoker
WILDCARDUnpredictable one
WILDCARDUnpredictable factor
WILDCARDA deuce used as an ace, e.g.
WILDCARDDeuce, sometimes
WILDCARDDeuce sometimes
WILDCARDPostseason tournament pick
wildcarda symbol used in a database search to represent unspecified characters