it is of no avail to complain
to there is no point in waiting
Verb
Don't waste your time.
Sentence
to plough plow the sands
Verb
to carry coals to newcastle
Verb
to waste your breath
Verb
to cry over spilt milk
Verb
to make useless attempts to do sth
Verb
to go on a fool's errand
Verb
to lead someone a pretty dance
Verb
There is no amount of money that will convince me.
Sentence
to throw money down the drain
Verb
to waste one's time with trifles
Verb