Şunu aradınız:: naïve (İngilizce - Japonca)

naïve
ナイーブ

she is unbelievably naïve.
彼女は、信じられないほどに世間知らずだ。

don't be so naïve!
ばか正直だよ

¶¶gullible, naïve, positively grubby. ¶¶
騙され易くて まったく不潔

i'm surprised that you're so naïve.
君は意外に純情だね。

- no reason, it just seems a bit naïve.
なぜ聞く？ いや、ただ考えが甘いのかと

maybe i'm naïve, but this gives me hope.
俺はナイーブだけど、 希望になる

"perhaps because he seems naïve and unassuming."
きっと 彼がナイーブで 慎ましい人だからだろう

"it was the only one left." don't be naïve.
"あれだけが残った "

are you boys really that naïve? s.h.i.e.l.d. monitors potential threats.
シールドは脅威を 監視する組織なの

well, darling, i'm very pleased you've inherited not only your mother's beauty and naïve charm but also her singular talent for getting huge sums of money out of me with a modicum of effort.
母親似で うれしいよ 美しさや 天真爛漫さだけでなく━ 私しから大金を 絞り取る才能もある