役に立つ

やくにたつ

to be helpful, to be useful

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

役立たず

やくたたず やくだたず

useless, deadhead

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

立つ

たつ

to stand, to rise, to stand up

役に立たない

やくにたたない

of no avail, useless

立場に立つ

たちばにたつ

to stand in (someone's) place, to be in a (certain) position

役

やく えき

war, campaign, battle

弥立つ

よだつ いよだつ

to stand up straight, to stand on end (e.g. of hair), to have the creeps

煮立つ

にたつ

to boil, to simmer

粒立つ

つぶだつ

to become grainy

表立つ

おもてだつ

to become public, to be known

爪立つ

つまだつ

to stand on tiptoe

角立つ

かどだつ

to be sharp, to be rough