ふと

ふとfuto

adverb

  1. suddenly
  2. casually
  3. accidentally
  4. incidentally
  5. unexpectedly
  6. unintentionally

Study it in Yanamino

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