send a boy to do a man's job
misrecruit
press-gang
underinstruct
naif
raw recruit
inexperiencedly
misplace
mishire
baulker
jackleg
untempered
balker
noncompliant
mispromotion
incapacitate
inadequate
flunkout
sad sack
rope into
baby
tenderfoot
play at
indispose
fledgling
wannabe
weigh against
nonfacilitator
disobeyer
indocile
disobedient
gosling
unseen
disqualify
unversed
unreason
underchallenge
green
verdant
punk
virgin
over a barrel
second-stringer
nonsigner
unadept
unqualified
nonaspirant
whore
unfledged
unworthy
on the wrong foot
draw into
nonadherent
muggle
layman
palooka
zeal without knowledge is a runaway horse
dog in the manger
nonlearner
raggedy-ass
undereducate
welch
nonsubmitter
green hand
incompetent
unqualification
paint oneself into a corner
sucker
refusenik
entry-level
reluctant dragon
wither on the vine
get in someone's hair
nonfeasor
offbeat
box oneself into a corner
dob
disincentivize
thwarting
kicking and screaming
numskull
frustration
matriculability
noncooperator
play fast and loose
be born yesterday
homebird
talk one's way out of
wet
Muggle
delicense
foiling
maverick
naive
underachieve
roll of the dice