callow (adj.)

• adolescent
• awkward
• budding
• defective
• deficient
• dewy
• dumb
• embryonic
• empty
• empty-headed
• evergreen
• failing
• firsthand
• fledgling
• fresh
• gauche
• green
• groping
• growing
• guileless
• half-baked
• ignorant
• immature
• inadequate
• inane
• incomplete
• inexperienced
• ingenuous
• innocent
• intact
• juicy
• juvenile
• lacking
• maiden
• maidenly
• minor
• missing
• naive
• nescient
• new
• original
• part
• partial
• patchy
• pristine
• raw
• ripening
• sappy
• scant
• scanty
• scrappy
• short
• shy
• simple
• sketchy
• tender
• tentative
• unacquainted
• unbeaten
• uncomprehending
• underage
• underdeveloped
• undeveloped
• unenlightened
• unfamiliar
• unfledged
• unformed
• unilluminated
• uninformed
• uninitiated
• unintelligent
• unknowing
• unpracticed
• unripe
• unseasoned
• unsophisticated
• unsure
• untouched
• untried
• untrodden
• unused
• unversed
• vacuous
• vernal
• virgin
• virginal
• wanting
• young
• youthful