Nantoka/费劲fèi jìnTraditional: 費勁HSK 7–9费劲 (fèi jìn) is a Chinese word meaning “to require effort; strenuous”.Meanings1to require effort2strenuousCharacters in 费劲费fèi · to cost劲jìn · strengthRelated words浪费to waste免费free (of charge)费to cost费surname Fei对劲suitable; to one's liking劲strength劲stalwart费用cost差劲bad费城Philadelphia, Pennsylvania小费tip花费expenseStudy Chinese with flashcards →