{adv. phr.} At some unknown time in the future; sometime. * /John will come back sooner or later./ * /Grandpa is very slow about fixing things around the house, but he always does it sooner or later./ Compare: OR OTHER.
SOONER OR LATER
Meaning of SOONER OR LATER in English
Slang English vocab. Английский сленговый словарь. 2012