がんばっったそうだ
頑張っったそうだ
gamba'tta sōda

Interjection
Evidential Auxiliary

Expresses hearsay about a past event ("I heard that...") of がんばって

1. They say (he/she/it) tried their best.; I heard they did their best.

Past/Perfective
Hearsay Evidence
Usually Written in Kana