たまたま
偶々
tamatama

Adverb

1. by chance; by accident; accidentally; happen to (be, do); unexpectedly; casually

Usually Written in Kana
とうりをあるいていたとき、私わたくしはたまたま旧友きゅうゆう出会であった。
tōrio aruite ita toki watashiwa tamatama kyūyūni deatta
Walking along the street, I happened to meet my old friend.
Adverb

2. occasionally; once in a while; now and then

Usually Written in Kana
Related to たまに
Other forms: