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Definition of ununderstandable
ununderstandable
/ˌʌn.ʌn.dɚˈstæn.də.bəl/
un · un · der · stand · a · ble
Adverb:ununderstandably
ununderstandable Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
Rare
Syllables
6
• adjective
1
Impossible or extremely difficult to understand, comprehend, or make sense of.
Example
"The legal contract was written in such dense, archaic jargon that its terms were practically ununderstandable to the average reader."
Word Nuance & Usage
Because the repeated 'un-' sound makes 'ununderstandable' phonetically awkward, style guides and formal writers strongly prefer synonyms such as 'incomprehensible', 'unintelligible', or 'unfathomable'.
• Rhymes for ununderstandable
Cite this Entry
Wordmom. (2026). Definition of Ununderstandable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ununderstandable