láo'ér​wú​gōng

to work in vain

Senses

劳而无功/ 勞而無功 láo'ér​wú​gōng to work in vain

to work hard while accomplishing little; to toil to no avail; to expend effort for no results

References

antonym 劳而无功/勞而無功 不劳而获/不勞而獲
antonym 劳而无功/勞而無功 事半功倍/事半功倍