Part of speech:
Of the earliest times or ages; primal; primordial
Having existed a long time; very old
Relating to, being, or characteristic of words and language that were once in regular use but are now relatively rare and suggestive of an earlier style or period.
Of, relating to, or belonging to the era before recorded history.
Far or farther from a reference point:
Find another word for immemorial. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for immemorial, like: olden, primeval, ancient, old, traditional, archaic, dateless, prehistoric, recent, current and lately.