inexplicably means for no reason that is known or understood. When something inexplicably happens, there is usually a reason behind it, but it is still unknown.
His injury was inexplicably brutal and he was knocked out cold.
The incident was inexplicably violent and there was a lot of damage done.
adverb
in a manner differing from the usual or expected
Synonyms:
1
The incident seems inexplicable.
2
The contrary position is really inexplicable.
3
It is inexplicable, and the attempts to remedy it interfere with the game.
4
She is simply paid to explain the inexplicable.
5
The overwrought tone here is inexplicable and unhelpful.
6
There is an inexplicable reference to American Idol in the article.
7
He stuffed himself at mealtimes with an inexplicable urgency.
8
The fact that he's not on the list of Jewish comedians is inexplicable.
9
A series of inexplicable experiences drives the wife to near madness.
10
Also, walmart's anti philanthropical methods are inexplicable and piteous.