もしかして

もしかしてmoshikashite

adverb

  1. perhaps
  2. possibly
  3. maybe
  4. by any chance
  5. if I'm not mistaken
  6. if
  7. in case
  8. in the event that

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences