inexplicably
For no reason
Inexplicably means in a way that cannot be explained or understood: The car inexplicably veered off the road.
The word often signals that the speaker finds behavior baffling or irrational: She inexplicably refused the promotion.
Sometimes it's used loosely where the explanation simply isn't given: Inexplicably, he was wearing a tuxedo to the grocery store.
Without clear reason
- unfathomablyBeyond capacity to understand
- mysteriouslyIn puzzling manner
- puzzlinglyIn confusing manner
- bafflinglyIn confusing manner
perplexingly · incomprehensibly · inscrutably · confoundingly · bewilderingly · mystifyingly · enigmatically · curiously
Without gradual transition
- unexpectedlyWithout prior indication
- suddenlyWithout prior indication
- unpredictablyWithout foreseeable pattern
- spontaneouslyWithout forethought or preparation
unforeseeably · without warning · out of nowhere · surprisingly · startlingly · shockingly · jarringly · disconcertingly
unaccountably
Without clear reason
- unfathomablyBeyond capacity to understand
- mysteriouslyIn puzzling manner
- puzzlinglyIn confusing manner
bafflingly · perplexingly · incomprehensibly · inscrutably · confoundingly · bewilderingly · mystifyingly · enigmatically · curiously · strangely
abruptly
Without gradual transition
- unexpectedlyWithout prior indication
- suddenlyWithout prior indication
- unpredictablyWithout foreseeable pattern
spontaneously · unforeseeably · without warning · out of nowhere · surprisingly · startlingly · shockingly · jarringly · disconcertingly · without cause
inexplicablyunderstandably
For obvious reasons
clearly · obviously · comprehensibly · evidently · manifestly