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useful

[yoos-fuh l] /ˈyus fəl/
adjective
1.
being of use or service; serving some purpose; advantageous, helpful, or of good effect:
a useful member of society.
2.
of practical use, as for doing work; producing material results; supplying common needs:
the useful arts; useful work.
Origin
1585-1595
1585-95; use + -ful
Related forms
usefully, adverb
usefulness, noun
unuseful, adjective
unusefully, adverb
unusefulness, noun
Synonyms
1, 2. profitable, efficacious, beneficial.
Antonyms
1, 2. useless.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for useful
  • Many universities have put their career information online, and these sites are useful for anyone seeking an academic job.
  • Yet for all its weirdness, antimatter is real not fictional, and has already proved useful in medicine.
  • Ohm's law is useful to explain currents in copper wires.
  • He was also a useful antidote against a certain strain of biological romanticism.
  • Table-high fireplace is as useful as it is romantic.
  • The capacitive stylus has turned out to be surprisingly useful for a lot of things, but up until now it was never a flirting tool.
  • The program there helps him broaden his skills in entrepreneurship, among other skills useful to an aspiring scientist.
  • But, it turns out, a solar sail need not always be particularly large to be useful.
  • Some people consider hedgehogs useful pets because they prey on many common garden pests.
  • Perhaps it's my way of rebelling against a world in which everything must be useful.
British Dictionary definitions for useful

useful

/ˈjuːsfʊl/
adjective
1.
able to be used advantageously, beneficially, or for several purposes; helpful or serviceable
2.
(informal) commendable or capable: a useful term's work
noun
3.
(Austral, informal) an odd-jobman or general factotum
Derived Forms
usefully, adverb
usefulness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for useful
adj.

1590s, from use (n.) + -full. Related: Usefully; usefulness.

Online Etymology Dictionary, © 2010 Douglas Harper
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