undatable

English Thesaurus

1. not capable of being given a date (adj.all)

similar	:	dateless, undated,
definition	:	not bearing a date (adj.all)

similar	:	dateless,
definition	:	of such great duration as to preclude the possibility of being assigned a date (adj.all)

antonym	:	datable, dateable,
definition	:	that can be given a date (adj.all)

antonym	:	datable, dateable,
definition	:	that can be given a date (adj.all)