unsuccessful

[ uhn-suhk-ses-fuhl ]
/ ˌʌn səkˈsɛs fəl /

adjective

not achieving or not attended with success: an unsuccessful person; an unsuccessful venture.

Origin of unsuccessful

First recorded in 1610–20; un-1 + successful

Related forms

un·suc·cess·ful·ly, adverbun·suc·cess·ful·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unsuccessful

British Dictionary definitions for unsuccessful

unsuccessful

/ (ˌʌnsəkˈsɛsfʊl) /

adjective

not having succeeded

Derived Forms

unsuccessfully, adverb
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