Princeton's WordNet

1. naif(adj)

   a naive or inexperienced person

2. naive, naif(adj)

   marked by or showing unaffected simplicity and lack of guile or worldly experience

   "a teenager's naive ignorance of life"; "the naive assumption that things can only get better"; "this naive simple creature with wide friendly eyes so eager to believe appearances"

Wiktionary

1. naif(Noun)

   One who is naive.

2. naif(Adjective)

   Naive.

Origin: From naïf.

Webster Dictionary

1. Naif(adj)

   having a true natural luster without being cut; -- applied by jewelers to a precious stone

2. Naif(adj)

   naive; as, a naif remark

• ساذِجArabic
• cândidoPortuguese (BR)
• naivGerman
• αφελήςGreek
• cándidoSpanish
• naiivneEstonian
• naiiviFinnish
• naïfFrench
• naivHungarian
• polosIndonesian
• barnalegur; einlægurIcelandic
• ingenuoItalian
• 素朴なJapanese
• 고지식한Korean
• paprastas, negudraujantisLithuanian
• vienkāršs; aprobežotsLatvian
• naïefDutch
• naiv, naturlig, likeframNorwegian
• prostodusznyPolish
• ساده و بى تكلفPersian
• ساده او روانPashto
• cândidoPortuguese
• наивный, простодушныйRussian
• naivnýSlovak
• naivenSlovenian
• naiv, naturlig, okonstladSwedish
• ตรงไปตรงมาThai
• saf, bön, toyTurkish
• 單純質樸的Chinese (Trad.)
• 朴实的Chinese (Simp.)