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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(151) I could find some useful books in the library. In negative sentences, could not can also be used:We weren't able to / didn't manage to / couldn't get there in time. Could is also used with this meaning with verbs of seeing, noticing, understanding, etc.:I could see there was something wrong.
(152) His policy is to ingratiate himself with anyone who might be useful to him.
(153) The newsletter is a useful channel of communication between teacher and students.
(154) On-line instruction is a useful adjunct to the real thing.
(155) Many employers consider hands-on experience to be as useful as academic qualifications.
(156) 'That will be useful,' she snapped with heavy sarcasm .
(157) The value of the machinery is amortized over its estimated useful life.
(158) If she could only channel all that energy into something useful.
(159) This exercise can be quite a useful ice-breaker for new groups.
(160) This meeting has been, without doubt, one of the most useful we have had so far.
(161) The club serves a useful function as a meeting place.
(162) What she said was a useful simplification of the theory.
(163) The guide contains a useful checklist of points to look for when buying a car.
(164) His executive skills will be very useful to the company.
(165) At the end of this chapter there is a select bibliography of useful books.
(166) I often meet useful people at parties, so I combine business with pleasure.
(167) The minister said she did not consider that a public enquiry would serve any useful purpose.
(168) These two books will be especially useful for editors, journalists and other professional users of the language.
(169) I was able to/managed to find some useful books in the library. Sentencedict.com
(170) From a teacher's point of view this dictionary will be very useful.
(171) The list serves as a useful reminder of the issues to consider.
(172) It may be useful at some time in the future .
(173) The data can be used to make useful economic predictions .
(174) Hypnotherapy can be useful in helping you give up smoking.
(175) I can see no useful purpose in continuing this conversation.
(176) Illustration is often more useful than definition for showing what words mean.
(177) Unemployment serves as a useful point of reference in examining social problems.
(178) My nephews tried to make themselves useful about the house.
(179) Don't linger away your holidays. Try to find something useful to do.
(180) The police gained a great deal of useful information about the organization.
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.