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Free sign upThe word 'ill-defined' is a correct and usable word in written English.
You can use it to refer to things or concepts that are vague, unclear, or not well defined. For example: "The company's goals were ill-defined, making it difficult for employees to understand what was expected of them."
Dictionary
ill-defined
adjective
Poorly defined; blurry, out of focus; lacking a clear boundary.
synonyms
Exact(51)
"It's easiest to define somebody when they're ill-defined, and John Kerry's ill-defined".
It is an intentionally ill-defined term.
"This process is open-ended and ill-defined".
("Theft" was another ill-defined term in the speech).
They'd have some ill-defined "compensation" for missing work.
Still, Mr. Coffey's role was ill-defined and spread thin.
Similar(9)
As a health threat, it was ill defined.
And their long-term risks are ill defined.
It is ill defined at best, hypocritical at worst.
Once again, the figure is very crude and ill defined.
The instruments' place in museums too is ill defined.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.
Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com