形容詞 ingenuous:

1. characterized by an inability to mask your feelings; not devious
   同義詞：artless
2. lacking in sophistication or worldliness
   同義詞：innocent

1. She is too ingenuous in believing what others say.
   ＂她太天真，輕信別人的話。＂

in.gen.u.ous

adj.（形容詞）
Lacking in sophistication or worldliness; artless.
純真的，無邪的：缺乏老練或世俗的；無心計的
Openly straightforward or frank; candid.See Synonyms at naive
率直的，坦白的：公開地直言或坦率的；直率的參見 naive
Obsolete Ingenious.
【廢語】 靈巧的

來源：
Latin ingenuus [honest, freeborn] * see gen…-
拉丁語 ingenuus [誠實的，生來自由的] *參見 gen…-

【引伸】
ingen.uously
adv.（副詞）
ingen.uousness
n.（名詞）