頑 - stubborn, foolish, firmly

to persevere; to persist; to keep at it; to hang on; to hold out; to do one's best

stubborn; dogged; persistent; tenacious

tenacity; endurance

do your best; go for it; hang in there; keep at it

stubborn; obstinate; pigheaded

solid; firm; stout; burly; strong; sturdy

obstinate; stubborn; mulish; die-hard; bigoted

bigoted; obstinate; stubborn; pigheaded

stubbornly; firmly; determinedly; obstinately; resolutely; adamantly

innocent; helpless

obstinate and foolish

headstrong; obstinate; bullheaded