naive (adj.)

• artless
• awkward
• bluff
• blunt
• budding
• callow
• candid
• childlike
• confiding
• credulous
• dependent
• dewy
• direct
• dumb
• easy
• empty
• empty-headed
• frank
• fresh
• gauche
• green
• groping
• growing
• guileless
• gullible
• ignorant
• immature
• inane
• inexperienced
• ingenuous
• innocent
• intact
• juicy
• minor
• nescient
• open
• openhearted
• original
• outspoken
• persuadable
• plain
• raw
• reliant
• ripening
• sappy
• simple
• sincere
• single-minded
• soft
• susceptible
• tender
• tentative
• trustful
• trusting
• trusty
• unacquainted
• unaffected
• uncomprehending
• underage
• undeveloped
• unenlightened
• unfamiliar
• unfledged
• unformed
• unguarded
• unilluminated
• uninformed
• uninitiated
• unintelligent
• unknowing
• unreserved
• unripe
• unschooled
• unseasoned
• unsophisticated
• unstudied
• unsure
• unsuspecting
• unsuspicious
• unversed
• unwary
• vacuous
• vernal
• virginal