ill-defined

[il-di-fahynd]

adjective

1. badly or inadequately defined; vague.

   He confuses the reader with ill-defined terms and concepts.

ill-defined

adjective

1. imperfectly defined; having no clear outline

Word History and Origins

Origin of ill-defined¹

First recorded in 1865–70

Related Words

• murky 
• unclear 
• vague