introductory Synonyms

prefatory basic fundamental first opening initial elementary early preliminary preparatory prefatorial prologue propaedeutic propaedeutical provisional rudimental rudimentary starting prelusive proemial prodromal prior prelusory primeval primer primary prevenient preparative primogenial starter pre-existent premedical pretrial prodromic prolegomenous underivative untapped forerunning orienting foundational entry-level start-up supra survey transitional tuitionary vestigial prelim aforeknown ahead of