What does 'Gambaru' mean?
A very popular term used when encouraging someone is a difficult task. Some English translations are "Hang in there!," "Don't give up!," "Do your best!," and "Give it your all!" Note: the verb phrase shikkari suru has an overlapping meaning, but slightly different connotations. Apparently, the latter term implies use of innate abilities as opposed to a conscious act of willpower. The two are generally interchangeable, though. The command forms of "gambaru" are "gambatte" and "gambare."