ill-defined 
adjective
Not having a clear description or limits; vague: ill-defined concepts...
- In the Collins Review it's presented as a vague and ill-defined feel-good motherhood concept.
- Scotland remains vague and ill-defined in the US consciousness.
- No, he favors a vague and ill-defined form of collective ownership that the workers will figure out as they bumble and stumble along towards bankruptcy.
Synonyms
vague, indistinct, unclear, imprecise, inexplicit;
blurry, blurred, fuzzy, hazy, woolly, nebulous, shadowy, dim
- Northern Irish
- Northern Irishman
- northernisation
- northernise
- northernised
- northernism
- northernization
- northernize
- northernized
- Northern Lights
- northernly
- northern manatee
- Northern Marianas
- northernmost
- Northern Neck
- northernness
- northern oriole
- northern phalarope
- northern pine
- Northern Province
- Northern Rhodesia
- northern rock cress
- northern sea cow
- northern sea lion
- northern snakehead