ill-defined

[ il-di-fahynd ]
/ ˈɪl dɪˈfaɪnd /

adjective

badly or inadequately defined; vague: He confuses the reader with ill-defined terms and concepts.

Origin of ill-defined

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for ill-defined

ill-defined


adjective

imperfectly defined; having no clear outline
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