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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
ill defined border
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "ill defined border" is not correct in standard written English; it should be "ill-defined border." You can use it when discussing boundaries that are vague or not clearly established, often in contexts like geography or policy.
Example: "The region has an ill-defined border, leading to disputes between neighboring countries."
⚠ May contain grammatical issues
Alternative expressions(3)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Three patients with lymph nodes showing metastatic ovarian carcinoma (diagnosed as metastatic adenocarcinoma) showed groups and sheets of atypical cells having high nucleus to cytoplasm ratio, overlapping and pleomorphic vesicular to hyperchromatic nuclei with inconspicuous to rarely conspicuous nucleoli, ill defined cytoplasmic borders and cytoplasmic vacuolations.
Science
A sharply defined border can be a cruel thing.
News & Media
Compared with the diffuse, ill-defined border of the VM-M3 tumour observed in the AL-fed control mice, the tumour grown in the CR mice appeared denser with a more defined border.
Science
US detected abnormal imaging as solid lesions with ill defined or irregular borders, non calcified lesions with posterior acoustic shadowing, solid intracistic or intraductal lesions.
Science
The Palestinians want a final agreement for the establishment of a state with defined borders.
News & Media
Rarely, poorly defined borders are observed.
Science
That is, the game isn't entirely an FPS with clearly defined borders.
News & Media
Nuclei had well defined borders.
Science
These tumours have discrete, sharply defined borders.
Science
These NEAT1 RNA foci show sharply defined borders and little nucleoplasmic signal.
Science
The borders of the lesions may be ill defined or clearly defined (Fig. 3a).
Science
Expert writing Tips
Best practice
Always hyphenate "ill-defined" when used as a compound adjective before a noun, such as in "ill-defined border". This ensures grammatical correctness and clarity.
Common error
The most common mistake is omitting the hyphen in "ill-defined". Without the hyphen, "ill" can be misinterpreted as modifying "defined" rather than the entire phrase modifying "border".
Source & Trust
60%
Authority and reliability
2.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "ill defined border" (or, correctly, "ill-defined border") functions as an adjective phrase modifying the noun "border". Ludwig AI suggests that it is grammatically incorrect without the hyphen.
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Less common in
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Ludwig's WRAP-UP
The phrase "ill defined border" requires a hyphen to be grammatically correct: "ill-defined border". This phrase describes a boundary that lacks clarity or precision. Ludwig AI identifies the unhyphenated version as incorrect. While the phrase itself has no specific usage context, it would be considered to have a neutral register. Without the hyphen, the phrase is grammatically flawed and open to misinterpretation.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
poorly defined boundary
Replaces "ill" with "poorly" while retaining the meaning of lacking definition.
vague demarcation
Uses a more formal term "demarcation" instead of "border" and "vague" instead of "ill-defined".
indistinct boundary
Replaces "ill-defined" with "indistinct", suggesting a lack of clear distinction.
blurred division
Uses "blurred" to convey the lack of a sharp border and "division" as a synonym for "border".
unclear frontier
Replaces "border" with "frontier" and "ill-defined" with "unclear".
fuzzy edge
Employs more informal language, using "fuzzy" and "edge" to describe the lack of a crisp border.
imprecise limits
Shifts the focus to "limits" rather than a border, indicating a lack of precision.
amorphous boundary
Uses "amorphous" to suggest a lack of fixed shape or form of the boundary.
tenuous border
Suggests that the border is weak or insubstantial.
nebulous dividing line
Employs "nebulous" to imply a hazy or indistinct border, using "dividing line" as a substitute.
FAQs
How should I correctly write "ill defined border"?
The grammatically correct way to write it is "ill-defined border", using a hyphen to connect "ill" and "defined" when they act as a single adjective modifying "border".
What does "ill-defined border" mean?
It refers to a boundary or frontier that is not clearly established or easily recognized. It can be used in geographical, political, or even conceptual contexts.
Are there synonyms for "ill-defined border"?
Yes, you can use alternatives such as "vague demarcation", "poorly defined boundary", or "indistinct boundary".
Can you provide an example of how to use "ill-defined border" in a sentence?
A correct example would be: "The region has an ill-defined border, leading to frequent disputes between neighboring countries."
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
60%
Authority and reliability
2.5/5
Expert rating
Real-world application tested