Synonyms for Initiate:

n.

belong to, entrance, open, launch, DUES, From, admission, go over to, co-opt. action, receive, appeal, class action, court-martial, admit, case, court, dissent, cause, committal. approach, the uninitiated, get off, newcomer, take on, enter, kick off, set-to, workie, learner, protege. catalyze, start-off, make, bring about, accept, trigger. fledgling, abecedarian, lecture, rookie, freshman, coach, ground, tenderfoot. amateur (noun)
dilettante, nonprofessional, apprentice, novice, layman, lay person, beginner, greenhorn, amateur, neophyte.
beginner (noun)
abecedarian, tyro, apprentice, learner, novice, amateur, fledgling, newcomer, tenderfoot, greenhorn, neophyte.
initiate (noun)
induct, enlightened, novice, beginner, start, tyro, savant, learned person, pundit, lead up, pioneer, initiated, originate, experienced, broach, tiro.
novitiate (noun)
freshman.

v.

admit (verb)
accept, receive.
begin (verb)
develop, make, DO, create, bud, form, initialize, hatch, embark, dawn, sprout, originate, start, begin, induct, produce, spring, generate, introduce, germinate, birth, stem, establish, bring about, commence, prepare, inaugurate, undertake, conceive, emerge, cause.
create (verb)
hatch, perform, invent, form, conceive, start.
creation (verb)
pioneer, originate, start.
dawn (verb)
develop, emerge.
initiate (verb)
inaugurate, install, originate, introduce, admit, trigger, set up, coach, induct, enter, Instate, kick off, pioneer, institute, launch, open, commence, begin.
install (verb)
establish, graft, ensconce, implant, insert, embed, place, locate, put, install, fix, connect, root, position, build in, plant, Instate.
originate (verb)
produce, invent, generate, institute.
venture (verb)
maneuver, scheme, campaign, undertake, proceed, venture, endeavor, perform, act, pursue.

Other synonyms:

learner, newcomer, abecedarian, fledgling, protege, workie, rookie. freshman, tenderfoot. launch, coach, make. receive. approach. enter. begin
open, establish, trigger.
start
ground.