英和和英

a useful thing

to be very useful

to be helpful

be beneficial for

being handy

to give a person something to use at his/her disposal

of a thing or person, being very useful to do something

to be useful―of use―serviceable―of service―good for something

to put something to some use

to be effective

become effective

to come in handy

be used by

to be efficient

to be profitable

to serve

be of use

be helpful or useful

to be useful―of use―serviceable―of service―good for something―to come in useful―serve one's purpose―prove of service―render service―stand one in stead

be applicable to

to begin to be useful

be worth it

make available

put to use

be sufficient

to do one's business―attend to business

having help

to answer the purpose―serve one's turn―（形容詞をもって言い表せば）―to be useful―serviceable―helpful―available―good for something.

the state of being useful

to use a person or a thing to achieve something