noun

a vigorous or determined attempt.

attempt,try,endeavour,crack,go,shot,stab,bash,whack,essay,assay,strive,seek,exert oneself,do one’s best,labour,work,toil,struggle,apply oneself,undertake,aim,set out,take it on oneself,have a go/shot/crack/stab/bash,give it a burl,give it a fly