callow
fledgling
naive
new
raw
unfledged
uninitiate
uninitiated
unpracticed
unpractised
unseasoned
untested
untried
unversed
young
a novice at
a stranger to
artless
awkward
befoolable
blankminded
born yesterday
budding
dewy
disaccustomed
dumb
empty
empty-headed
foolable
fresh
gauche
green
green as grass
griffinish
groping
growing
gullible
ignorant
immature
impubic
inane
indefensible
inept
inexpert
inexpiable
ingenuous
innocent
intact
juicy
know-nothing
minor
nescient
new to
new-fledged
prentice
ripening
brave
enthusiastic
helpless
incompetent
misguided
skilled
talented
timid
uneducated
unskilled
unsophisticated
unsuspecting
untrained
would-be
experienced