adj, verb ·Rare ·Advanced level

Definitions

Verb

1. 1
   simple past and past participle of undiagnose form-of, participle, past

Adjective

1. 1
   That had not been diagnosed. not-comparable

   "After the accident, a sleep study identified that the GBRf driver had previously undiagnosed severe Obstructive Sleep Apnoea."

Adjective

1. 1
   eluding diagnosis wordnet

Synonyms

All synonyms

unknown

Example

More examples

"Layla had an undiagnosed mental illness."

Etymology

From un- + diagnosed.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.