interjection
go for it; keep at it; you can do it
Casual, encouraging interjection used among friends or in informal settings. Abbreviated from 頑張って.
See also: 頑張って
明日の試合、がんば！
Good luck in tomorrow's game!
もう少しだよ、がんば！
You're almost there, keep at it!
Colloquial abbreviation of 頑張って (ganbatte), the te-form of 頑張る (ganbaru, 'to persevere').