ill-defined
Lacking clear boundaries
Something ill-defined lacks clear boundaries, precise meaning, or sharp outline.
An ill-defined role leaves someone uncertain about their responsibilities; ill-defined goals are too vague to guide action effectively.
The term applies equally to abstract concepts (ill-defined criteria) and physical things (an ill-defined shape in the fog).
It suggests not just incompleteness but a quality of blurriness that makes something difficult to grasp or work with.
Unclear, ill-defined
- ambiguousHaving multiple interpretations
- unclearNot easily understood
- fuzzySoft and unclear
- nebulousUnclear and formless
hazy · imprecise · murky · indeterminate · amorphous · blurry · indefinite · unspecific
Not explicitly named
- undocumentedNot officially recorded
- ambiguousHaving multiple interpretations
- incompleteLacking necessary parts
- scope creepUncontrolled project growth
open-ended · unstructured · informal · ad hoc · placeholder · draft · sketchy · rough
Without defined limits
- blurredIndistinct, lacking clarity
- unmarkedHaving no visible identification
- fluidSubstance that flows
- permeableAllowing substances through
shifting · overlapping · contested · arbitrary · transitional · liminal · porous · unfixed
Not yet examined
- unexploredNot yet investigated
- emergingComing into view
- nascentBeginning to develop
- preliminaryBefore the main part
speculative · contested · problematic · understudied · inconclusive · debated · uncodified · provisional
vague
Unclear, ill-defined
nebulous · hazy · imprecise · murky · indeterminate · amorphous · blurry · indefinite · unspecific · loose
unspecified
Not explicitly named
- undocumentedNot officially recorded
- ambiguousHaving multiple interpretations
- incompleteLacking necessary parts
scope creep · open-ended · unstructured · informal · ad hoc · placeholder · draft · sketchy · rough · outline
borderless
Without defined limits
permeable · shifting · overlapping · contested · arbitrary · transitional · liminal · porous · unfixed · malleable
unresearched
Not yet examined
- unexploredNot yet investigated
- emergingComing into view
- nascentBeginning to develop
preliminary · speculative · contested · problematic · understudied · inconclusive · debated · uncodified · provisional · exploratory
- imaging findingsanechoic, hyperdense, hypodense, radiolucent, radiopaque
define, definition, defined, defining, definitions, redefine, undefined, definable, redefined