Definition of unsuccessful in English:

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Pronunciation: /ˌənsəkˈsesfəl/


Not successful: an unsuccessful transition period
More example sentences
  • To discriminate between successful and unsuccessful interventions we need evidence.
  • That is not restricted to the situation where the claimant is successful or unsuccessful.
  • He has already made two unsuccessful attempts at raising finance to fund an expansion programme.
vain, futile, useless, pointless, worthless, luckless
unprofitable, loss-making
failed, losing, beaten;
unlucky, out of luck
informal losingest



Example sentences
  • ‘I'm loose,’ he said, trying with great unsuccessfulness to float face down.
  • These boys represent the evidence which proves the unsuccessfulness of this treatment.
  • Major factors that influence student unsuccessfulness as determined by the results of this study are presented below.

For editors and proofreaders

Syllabification: un·suc·cess·ful

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