1 later /ˈleɪtɚ/ adjective
1 later
Learner's definition of LATER
always used before a noun
: happening near the end of a process, activity, series, life, etc.
: coming or happening after a certain time or at a future time
2 later /ˈleɪtɚ/ adverb
2 later
Learner's definition of LATER
: at a time in the future : at a time following an earlier time
◊ In informal spoken English, later is used especially by young people as a shortened form of the phrase (I'll ) see you later to say goodbye to someone.

later on

: at a time in the future or following an earlier time

sooner or later

see soon