Synonym: advantageous, beneficial, functional, handy, helpful, practical, serviceable, valuable. Similar words: be useful to, purposeful, purposefully, careful, doleful, forceful, hopeful, grateful. Meaning: ['juːsfʊl] 
adj. 1. being of use or service 2. having a useful function.
adj. 1. being of use or service 2. having a useful function. 
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(61) A thesaurus is a useful aid to writing.
(62) A video is a useful aid in the classroom.
(63) The computer is useful in processing data.
(64) The same information is equally useful when negotiating.
(65) It's a useful introduction to an extremely complex subject.
(66) The tourist office operates a useful room-finding service.
(67) The Internet is becoming a useful tool for investors.
(68) He is a useful bat.
(69) This chisel is useful for getting into awkward spaces.
(70) Wait outside in case you can be useful.
(71) It was a collaboration that produced extremely useful results.
(72) I have a useful contact in New York.
(73) The minister has piloted several useful bills through Parliament.
(74) Having your own computer is very useful.
(75) The computer is ever such a useful tool.
(76) The England cricket team scored quite a useful total.
(77) From this chastening experience he learnt some useful lessons.
(78) This book is a storehouse of useful information.
(79) It's useful to have someone to bounce ideas off.
(80) This method has proved the most generally useful.
(81) I've listed some useful reading material on the handout.
(82) Do the exercises serve any useful purpose?
(83) Videoing students can be a useful teaching exercise.
(84) Keep it(sentencedict.com),(Sentence dictionary) it might come in useful.
(85) These small village shops serve a very useful purpose.
(86) The cow is a useful animal.
(87) Information about people's language ability is often very useful.
(88) I've made some useful contacts in journalism.
(89) She gave me a useful/helpful/valuable/practical tip about/for growing tomatoes.
(90) Although useful, the accessories are by no means essential.
More similar words: be useful to, purposeful, purposefully, careful, doleful, forceful, hopeful, grateful, ruefully, be full of, to the full, carefully, graceful, hopefully, resourceful, gracefulness, make full use of, lose face, refuse, defuse, refuge, beef up, refute, refund, defunct, refugee, befuddle, full, befuddled, make fun of.