Unascertainable

//ˌʌnæsəˈteɪnəbl̩// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    That cannot be ascertained; uncertain, unable to be determined or discovered.

    "Everything one would wish to know of the relations of Aristotle and Alexander is unascertainable, the more so as legends were soon invented on the subject."

Adjective
  1. 1
    not able to be ascertained; resisting discovery wordnet

Synonyms

All synonyms
indeterminableundiscoverable

Example

More examples

"Everything one would wish to know of the relations of Aristotle and Alexander is unascertainable, the more so as legends were soon invented on the subject."

Etymology

From un- + ascertainable.

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