unknownreason
nounUK /ʌnˈnəʊn ˈriːzən/
US /ʌnˈnoʊn ˈriːzən/
A reason that nobody knows or understands.
The lights went out for an unknownreason.
RELATED WORDS
OTHER MEANINGS
2. A cause that has not been discovered yet.
Scientists are still searching for the unknownreason behind the strange sound.
3. A secret explanation that is kept hidden.
She smiled for an unknownreason that no one could guess.
4. Something that happens without a clear or known cause.
The door opened on its own for an unknownreason.