ingenuous (adj.)
- artless
- bluff
- blunt
- bold
- broad
- brusque
- budding
- callow
- candid
- childlike
- confiding
- dewy
- direct
- downright
- easy
- explicit
- fair
- forthright
- frank
- free
- free-spoken
- genuine
- green
- growing
- guileless
- gullible
- heart-to-heart
- honest
- honorable
- immature
- inexperienced
- innocent
- intact
- juicy
- just
- minor
- naive
- natural
- open
- openhearted
- outspoken
- persuadable
- plain
- raw
- ripening
- round
- sappy
- simple
- sincere
- single-minded
- soft
- straight
- straight-out
- straightforward
- suggestible
- tender
- transparent
- trustful
- trusting
- trustworthy
- unabashed
- unaffected
- unchecked
- uncomplicated
- unconstrained
- underage
- undeveloped
- unequivocal
- unfledged
- unformed
- unguarded
- uninhibited
- unreserved
- unrestrained
- unripe
- unschooled
- unseasoned
- unsophisticated
- unstudied
- unsuspicious
- unwary
- vernal
- virginal