Layla had an undiagnosed mental illness.
Source: tatoeba (6107209)
Ranked by relevance and common usage.
Keep "undiagnosed" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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Choose a synonym only if it keeps the core idea of "undiagnosed" intact in the sentence you are editing.
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
After choosing a replacement for "undiagnosed", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
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8 total sentences available.
Layla had an undiagnosed mental illness.
Source: tatoeba (6107209)
A recent study indicates that a disturbing number of American children with high blood pressure go undiagnosed.
Source: tatoeba (11524250)
Matthew had a lot of undiagnosed mental health issues.
Source: tatoeba (11587155)
The best records of childhood cancers were from Western countries, including the United States, which kept records on almost 100 percent of sick children. Five percent or less of the data came from Africa and Asia, according to the report. In those low resource settings, Steliarova-Foucher says many cancers may go undiagnosed because of a lack of awareness and the unavailability of diagnostic equipment.
Source: tatoeba (12252474)
Showing 4 of 8 available sentences.
Closest matches include missed diagnosis, no diagnosis noted.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.