Shirabe
English jmdict
1
noun (common) (futsuumeishi) word usually written using kana alone attitude that one must keep going no matter what

頑張るがんばる

Common Godan Intransitive
English jmdict
1
Godan verb with 'ru' endingintransitive verb to persevere;to persist;to keep at it;to hang on;to hold out;to do one's best
いや、頑張ればできるよ。
Yes, he can, if he tries hard.
2
Godan verb with 'ru' endingintransitive verb to insist that;to stick to (one's opinion)
3
Godan verb with 'ru' endingintransitive verb to remain in a place;to stick to one's post;to refuse to budge