Other crossword clues for answer "XFACTOR"XFACTORSecret weapon, perhapsIntangible, perhapsUnknown influenceIts effect is hard to predictUnknownUnpredictable determinantHard-to-define elementNebulous elementHard-to-define influenceIntangible quality responsible for four puzzle answersUnpredictable elementUnknown elementMystery quality ... or what 18- and 55-Across and 3- and 32-Down have?Je ne sais quoiHard-to-define qualityElement of surprise?Hard-to-define yet special quality