adv ·5 syllables ·Rare ·Advanced level

Definitions

Adverb

1. 1
   Not able to be explained logically. Without being accountable, or reasonable.

   "After all that hard work, he unaccountably failed to take out the patent."

Adverb

1. 1
   in an unaccountable manner wordnet

Synonyms

All synonyms

aimlesslyat randomhaphazardlyirresponsiblymysteriously

Antonyms

All antonyms

accountablyresponsibly

Example

More examples

"She had known that the sight of Matthew jaunting off so unaccountably would be too much for her neighbor's curiosity."

Etymology

From unaccountable + -ly.

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