Un de ces quatre is a French idiom that translates literally to “one of these four” and means “one of these days” or “sometime soon”. The expression also appears as un de ces quatre matins, literally “one of these four mornings”.
un de ces quatre
one of these days

Example sentences
On se fait une bouffe un de ces quatre ?
Shall we have a meal together one of these days?
Un de ces quatre, je pense que je gagnerai au loto !
I think I’ll win the lottery one of these days!
Expression origin
This expression first appeared at the beginning of the 19th century but the exact origin is unknown. It’s meant to suggest a short duration of time which is expected to be at an undetermined and approaching date.


