protero-
⠋⠌
firstly
in the first instance
begin
firstest
get going
opening
innovation
institution
foundation
creation
founding
instauration
origination
initiation
introduction
preempt
at first
break one's duck
explore
commence
outsetting
in the first place
proto-
initially
from the word go
from the get-go
straight from the horse's mouth
embark
set forward
upfront
in advance
initiatory
inchoate
arch-
début
christen
first
traditionally
out of the gate
ab ovo
from the off
da capo
start up
to begin with
incept
tip off
kick start
go-off
start
start out
debut
start off
101
setout
incipience
pretask
initiative
initiate
outstart
head off
foremost
introductory
emergingly
launch pad
take the initiative
link
handsel
head
lead
if I'm not there, start without me
set forth
prefix
stepwise
pole position
exordium
initializable
off
break in
inaugurally
propaedeutic
get
foreprepared
proto
institute
commencer
discover
foremake
pioneer
premise
ring up the curtain
instantial
prefatory
out of the chute