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Add
ill-defined
adjective
• not having a clear description or limits; vague.
• "ill-defined concepts"
Similar:
vague
,
indistinct
,
unclear
,
imprecise
,
inexplicit
,
blurry
,
blurred
,
fuzzy
,
hazy
,
woolly
,
nebulous
,
shadowy
,
dim
,
Opposite:
well defined
,
sharp
,