つまずいたそうだ
躓いたそうだ
tsumazuita sōda

Godan Verb (ku)
Evidential Auxiliary

Expresses hearsay about a past event ("I heard that...") of つまずく

1. They say [someone] stumbled.; [Someone] apparently tripped.

Past/Perfective
Hearsay Evidence
Usually Written in Kana