英和和英

My labours are crowned with success

a thing that is done without effort

Don't give up without a struggle.

a condition of being unrewarded in spite of much effort

Square the circle

piffling efforts

piffling efforts

fruitlessness of efforts

All my efforts were in vain―of no avail―unavailing―All my efforts availed me nothing.

with little effort

slack (up) one's efforts

the degree to which effort is lacking

without effort or apparent effort

a meaningless endeavor

untiring efforts

the degree to which something can be done without effort

You should never fail to make efforts.

to make one's best effort

not resulting from undue effort

a halfhearted effort

I don't spare any efforts.

fruitless efforts

untiring efforts

make strenuous efforts

put less effort into A

He spares no pains

redouble one's efforts

lack of effort

dogged persistence

ineffective in spite of efforts