As a noun nondate
is a social event that is not a date, ie not arranged to pursue a romance.
As an adjective nondated is
not marked with a date.
nondate
English
Noun
(
en noun)
A social event that is not a date, i.e. not arranged to pursue a romance. nondated
English
Adjective
(
-)
Not marked with a date.
- a nondated check
Synonyms
* undated