Synonyms for unexplainable

Most common

mysterious · incomprehensible · inexplicable · inscrutable

All synonyms

Adjective

Antonyms

explainable, explicable, clear

All antonyms of unexplainable →

Definitions

1. adj. 1

   That doesn't have a known or readily available explanation.

Example sentences

• mysterious A mysterious spaceship was flying away from Earth.
• incomprehensible This language is incomprehensible to me when spoken.
• inexplicable There was something inexplicable about the story.
• inscrutable She looked at him with an inscrutable expression.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

By length

7 letters

obscure²

9 letters

insoluble⁴

10 letters

mysterious⁴, insensible⁴

11 letters

inscrutable⁴

12 letters

inexplicable⁵, unfathomable⁵

13 letters

unaccountable⁵

14 letters

unintelligible⁶

The small number after each word is its number of syllables (obscure² = 2 syllables).