[ UK /sˈi‍əɹɪəs/ ]
[ US /ˈsɪɹiəs/ ]
  1. of great consequence
    marriage is a serious matter
  2. concerned with work or important matters rather than play or trivialities
    are you serious or joking?
    a serious young man
    Don't be so serious!
    a serious student of history
    gave me a serious look
    a serious attempt to learn to ski
  3. appealing to the mind
    good music
    a serious book
  4. completely lacking in playfulness
  5. requiring effort or concentration; complex and not easy to answer or solve
    raised serious objections to the proposal
    the plan has a serious flaw
  6. causing fear or anxiety by threatening great harm
    a severe case of pneumonia
    a serious turn of events
    grievous bodily harm
    a life-threatening disease
    a dangerous operation
    a grave illness
    a grave situation
    a serious wound
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How To Use serious In A Sentence

  • The only seriously bad bit is that you become less agile and less strong. Times, Sunday Times
  • Moreover some parts of gain will devolute to Italian Red Cross seriously employed in the disastrous earthquake land that hit the middle lands of Italia few weeks ago. MacMegasite
  • He did his final piece of serious work on Tuesday morning, which was grand, and we have just kept him ticking over with a couple of canters.
  • So they set up this fund to compensate victims in serious cases of abuse.
  • A serious road accident caused traffic chaos yesterday.
  • The results were disastrous, plunging the country into deep depression, with high unemployment, sharply falling living standards and serious political unrest.
  • I do not of course mean, Heaven forbid! that people should try to converse seriously; that results in the worst kind of dreariness, in feeling, as Stevenson said, that one has the brain of a sheep and the eyes of a boiled codfish. From a College Window
  • My monitor fills with images of two men saluting, grinning thumbs up or looking dead serious.
  • A fellow council worker, who had just got out of the vehicle and was standing close at the time of the impact, suffered serious injuries.
  • Hundreds of the aircraft are on order, but loss of the Northwest batch is a serious setback.
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