立役

たてやく

leading actor, protagonist

立ち役

たちやく

leading male role in kabuki

立役者

leading actor; star

役立つ

やくだつ

to be useful, to be helpful, to serve the purpose

役立てる

やくだてる

to put to use, to make use of, to turn to account

立て役者

たてやくしゃ

leading actor, person who acts as driving force behind something, key figure, leading spirit, central figure

役に立つ

やくにたつ

to be helpful, to be useful

役に立たない

やくにたたない

of no avail, useless

役にも立たない

やくにもたたない

of no use whatsoever, good for nothing, useless

役に立てる

やくにたてる

to put to use; to make good use of; to exploit

引き立て役

ひきたてやく

person who makes someone else appear better, foil

糞の役にも立たぬ

くそのやくにもたたぬ

completely worthless, utterly useless

めどが立たず

めどがたたず

nowhere in sight; seems to be no prospect; up in the air

役

やく えき

war, campaign, battle

何の役にも立たない

なんのやくにもたたない

of no use whatsoever, good for nothing, useless

役割を演ずる

やくわりをえんずる

to carry out a role

当たり役

あたりやく

successful role

両雄並び立たず

りょうゆうならびたたず

if two ride upon a horse, one must sit behind, when Greek meets Greek, then comes the tug of war, two great rivals cannot coexist

後悔先に立たず

こうかいさきにたたず

It is no use crying over spilt milk