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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(211) He jollied people along and got useful information out of them.
(212) Do the lights on this cassette deck have any useful function or are they just/only for show?
(213) The dog was a useful rat catcher in the warehouse.
(214) 'I might as well do something useful, seeing as I'm back,' she said.
(215) Pilot studies are a useful preliminary to large research projects.
(216) The letters page serves as a useful forum for the exchange of readers' views.
(217) She wouldn't scruple to tell a lie if she thought it would be useful.
(218) Bar charts are a useful way of looking at sets of figures.
(219) The teacher's book gives useful hints on how to develop reading skills.
(220) Testing yourself with information on cards is a useful device for studying.
(221) The research may prove useful for applications in medicine and biotechnology.
(222) One of the most useful sources of documentary evidence is maps.
(223) He has provided a useful summary of the main categories.
(224) I wish you'd stop mooning about and do something useful!
(225) I've one or two useful pieces of information to pass on to you.
(226) Martin might be useful to us, but he would have to be handled carefully.
(227) Alternative treatments can provide a useful back-up to conventional treatment.
(228) I really do not think that an inquiry would serve any useful purpose.
(229) She's a most useful person in the office; she can turn her hand to anything.
(230) Some of the quotations are useful(sentencedict.com/useful.html), others are little more than padding.
(231) The Shakers believed that furniture should be plain, simple, useful, practical and of sound construction.
(232) The document provided a springboard for a lot of useful discussion.
(233) Some plastics are designed to biodegrade when their useful life is over.
(234) The guidebook arms the reader with a mass of useful information.
(235) He ladled out many ideas, but none of them were useful.
(236) The memory expansion cards are useful adjuncts to the computer.
(237) The drug will be useful to hundreds of thousands of infected people.
(238) A good knife is probably one of the most useful things you can have in a kitchen.
(239) In all departments, Leeds looked a more than useful side .
(240) Many useful substances are now recovered from materials which used to be thrown away.
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.