adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   That cannot be remembered or has been forgotten.
2. 2
   Whose origins have been forgotten; immemorial. broadly

Synonyms

All synonyms

unmemorableunmemorable

Antonyms

All antonyms

memorable

Etymology

From Latin immemorabilis (“not memorable”).

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