- perhaps not defined obviously or distinctly: an ill-defined concept; an ill-defined view over the foggy moor.
- Poorly defined; blurry, out of focus; lacking a definite boundary.
- badly stated or explained
- maybe not distinct; not well-marked on: as, an ill-defined feeling; particularly, in zoology, without definite borders: said of scars, depressions, etc.
- Definition for "ill-defined"
- perhaps not defined obviously or distinctly: an ill-defined…
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- Sentence for "ill-defined"