Skip to main content
ill-defined

ill-defined

5 6.5
Not clearly or exactly stated
  • adjective
  • /ɪl dɪˈfaɪnd/
translation icon : mal definido
  • The little girl's face located an ill-defined position between confusion and delight.
  • an ill-defined problem
  • an ill-defined mission
  • an ill-defined concept

And you're saying that this concept of complexity is ill defined when you grounded to space-time.

Autoplay Next

Examples

  • As such, the policy remains ill-defined, with the main goal being the unattainable objective of reducing drug use.

    Academic text (2007)
  • We don't often ask ourselves that, but it is a very ill defined phenomenon and that makes it hard to pin down.

  • Rather, it resulted from ill-defined expectations, poor communication, and a lack of clear administrative policies.

    Academic text (2014)
  • Congress continues to pass an increasing number of broad, ill-defined statutes.

    Academic text (2017)
  • Therefore, long-term goals and consequences are left ill-defined or, on occasion, not considered at all.

    Academic text (1995)
  • The mission changed from a U.S.-directed humanitarian effort to an ill-defined operation in nation building.

    Academic text (1996)
  • The role of surgery in the treatment of OSA remains ill-defined and controversial.

    Academic text (2011)
  • Africa's bloodiest war was launched in mid-1998 over an ill-defined border region.

    Academic text (2000)
  • Tiredness is an ill-defined subjective symptom of malaise, aversion to activity, and impaired performance.

    Academic text (2012)
  • The project failed because the goals were ill-defined and lacked specificity.

Synonyms

indistinct
vsill-defined
328 5.3

Not easy to see, hear, or understand

applies to difficulty in seeing or hearing rather than vague wording
vague
vsill-defined
230 4.6

Not clear or detailed so you are unsure what is meant

is more about not being clearly or exactly stated
unclear
vsill-defined
207 3.9

Not easy to understand or know for sure

is about poor exactness in the original statement rather than general confusion
indefinite
vsill-defined
39 4.0

Not clearly fixed or known, with no set end date

focuses on not being clearly or exactly stated rather than boundary loss
unspecified
vsill-defined
27 4.8

Something that does not give clear details

highlights being not clearly or exactly stated rather than merely omitted
indeterminate
vsill-defined
11 7.0

Not clearly known or decided

is about unclear or not exactly stated description rather than decision uncertainty
nebulous
vsill-defined
10 7.9

Unclear and hard to picture or describe

focuses on unclear wording rather than physical or visual shape
undefined
vsill-defined
8 5.3

Not clearly limited or described

stresses unclear wording rather than missing edges or borders
indecisive
vsill-defined
1 5.0

Not clearly defined so limits are unclear

focuses on not being clearly or exactly stated rather than hesitation in choice
underspecified
vsill-defined
  • Specialized
1 7.7

Not clearly or fully described so important details are missing

emphasizes poor clarity in how something is expressed
inexplicit
vsill-defined
7.5

Not clear or detailed, making the meaning unsure

refers specifically to failure to state something clearly or exactly
undescriptive
vsill-defined
7.2

Not giving clear details that help you imagine something

focuses on unclear exact statement rather than weak descriptive skill
unclarified
vsill-defined
6.2

Not explained clearly for people to understand

refers to being not clearly or exactly stated rather than unfinished explanation
undelineated
vsill-defined
9.5

Not clearly separated from other things and lacking clear edges

emphasizes unclear verbal expression rather than absent drawn boundaries
unelaborated
vsill-defined
7.9

Not fully developed and lacking important details

is about vague or imprecise wording rather than mere underdevelopment
unelaborate
vsill-defined
5.9

Something that is simple and without much decoration

focuses on unclear or not exactly stated meaning rather than simple form
nonlucid
vsill-defined
8.5

Difficult to understand

is about not being clearly or exactly stated rather than generally poor style

Antonyms

1.0

Easy to understand and not confusing

9 3.7

Clear and exact so there is no confusion

How Clear

well-defined
9 3.7
clear
1.0
unclear
207 3.9
ill-defined
5 6.5
vague
230 4.6
ambiguous
68 6.3

Surface Forms

ill-defined positive

Morphology

ill-defined = defined (transparent) = ill + define + ed

The meaning is directly derived from 'ill' (badly/poorly) + 'defined' (past participle of define), yielding 'not clearly defined'.

Etymology

Ill-defined joins ill- meaning 'not' or 'bad', as in illogical, and defined meaning 'made clear'. So, ill-defined describes something that is 'not clearly made' or 'vague'.