adv ·Uncommon ·Advanced level

Definitions

Adverb

1. 1
   In an unreasonable manner.

   "He behaved unreasonably."

2. 2
   To an unreasonable degree.

   "The team was given an unreasonably short amount of time to put together a presentation."

Adverb

1. 1
   to a degree that exceeds the bounds of reason or moderation wordnet
2. 2
   not in a reasonable or intelligent manner wordnet

Synonyms

All synonyms

excessivelyextravagantlyfaultgrosslyimmoderatelyimmoderately

Antonyms

All antonyms

reasonably

Example

More examples

"This is an early work, I did it freely without storyboarding so it's unreasonably long."

Etymology

From Middle English unresonably; equivalent to unreasonable + -ly.

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