Avail

to be of use or value to; profit; advantage

All our efforts availed us little in trying to effect a change.

to be of use; have force or efficacy; serve; help

His strength did not avail against the hostile onslaught.

to be of value or profit.

advantage; use; efficacy; effective use in the achievement of a goal or objective

His belated help will be of little or no avail.

avails, Archaic . profits or proceeds. ?

avail oneself of

to use to one's advantage

They availed themselves of the opportunity to hear a free concert.

noun

account , advantage , applicability , appropriateness , fitness , service , usefulness , benefit , profit , utility , blessing , boon , favor , gain

verb

account , advantage , answer , be adequate , benefit , fill , fulfill , meet , profit , satisfy , serve , suffice , work , assistance , help , use , utilize , value