形容詞 naive:

1. marked by or showing unaffected simplicity and lack of guile or worldly experience
   同義詞：naif
2. of or created by one without formal training; simple or naive in style
   同義詞：primitive
3. inexperienced
4. lacking information or instruction
   同義詞：uninstructed, unenlightened
5. not initiated; deficient in relevant experience
   同義詞：uninitiate, uninitiated

1. He is so naive as to believe such a lie.
   他竟然幼稚得連這種謊言都相信。
2. Lacking sophistication or worldly experience; naive.
   幼稚的，天真的不世故的，天真的
3. The politician made a naive decision.
   這個政治家做了一個幼稚的決定。
4. He derides her naive attitude.
   他嘲弄她天真的態(tài)度。

naive 或 na.ôve

adj.（形容詞）

Lacking worldliness and sophistication; artless.
缺乏俗氣和世故的；自然的
Simple and credulous as a child; ingenuous.
天真的：如同孩子般簡單和易輕信的；天真的
Lacking critical ability or analytical insight; not subtle or learned:
幼稚的：缺乏批評能力或分析眼光的；不敏感的或沒有經(jīng)驗的：
例句：
.this extravagance of metaphors, with its naive bombast.(H.L. Mencken)
.這些隱喻的夸張，帶著天真的高調(diào).(H.L.門琴)

Not previously subjected to experiments:
未實驗的：以前未曾用作實驗的：
例句：
testing naive mice.
測試未試驗過的老鼠

Not having previously taken or received a particular drug:
未用過的：以前從未用過的特別的藥物：
例句：
persons naive to marijuana.
沒用過大麻的人

n.（名詞）
One who is artless, credulous, or uncritical.
天真的人，易輕信的人，無批判力的人

來源：
French naôve [feminine of] naôf
法語 naôve [] naôf的陰性詞
from Old French [natural, native]
源自 古法語 [自然的，天真的]
from Latin n3tovus [native, rustic]
源自 拉丁語 n3tovus [天真的，粗俗的]
from n3tus [past participle of] n3sco [to be born] * see gen…-
源自 n3tus [] n3sco的過去分詞 [出生] *參見 gen…-

【引伸】
naive.ly
adv.（副詞）
naive.ness
n.（名詞）
<參考詞匯><同義詞>naive,simple,ingenuous,unsophisticated,natural,unaffected,guileless,artlessThese adjectives mean free from guile, cunning, or sham.
這些形容詞都含有不狡詐、不狡猾或不虛偽的意思。
Naive suggests the simplicity of nature;it sometimes connotes a credulitythat impedes effective functioning in a practical world:
Naive 意在表示本性的單純；有時它有輕信的意思，在現(xiàn)實生活中有時阻礙有效的工作：
例句：
.this naive simple creature, with his straightforward and friendly eyes so eager to believe appearances. (Arnold Bennett).
.這個天真的小家伙，友善率直的眼睛如此輕易相信表面現(xiàn)象. （阿諾德·貝內(nèi)特）。

Simple stresses absence of complexity, artifice, pretentiousness, or dissimulation;it may imply a favorable quality, such as openness of character, or an unfavorable one, such as lack of good sense:
Simple 強調(diào)不復(fù)雜、無巧飾、不偽裝或不掩飾；它也可以含有好的品質(zhì)（如性格開朗）或不好的品質(zhì)（如缺乏好的鑒賞力）：
例句：
.Those of highest worth and breeding are most simple in manner and attire. (Francis Parkman).
.那些最有名望和教養(yǎng)的人在穿著舉止上最為樸素自然. （弗朗西斯·帕克曼）。

例句：
.He was one of those simple men that love and sympathize with children. (W.H. Hudson).
.他是那種性格開朗的人之一，愛護同情孩子. (W·H·哈得孫）。

例句：
.Among simple people she had the reputation of being a prodigy of information. (Harriet Beecher Stowe).
.在普通人當中，她享有信息通的美名. （哈里特·比徹·斯托）。

Ingenuous denotes childlike directness, simplicity, and innocence;it connotes an inability to mask one`s feelings:
Ingenuous 著重于孩子般的直率、單純和天真；它暗示缺乏掩飾自己情感的能力：
例句：
an ingenuous admission of responsibility.
坦誠地承認義務(wù)。

Unsophisticated indicates absence of worldly wisdom:
Unsophisticated 強調(diào)不諳世故：
例句：
The sights of Paris bowled over the unsophisticated tourists.
巴黎景色讓不諳世故的旅游者們大吃一驚。

Natural stresses spontaneity that is the result of freedom from self-consciousness or inhibitions:
Natural 強調(diào)由于沒有自我意識或心理抑制而產(chǎn)生的自然：
例句：
.When Kavanagh was present, Alice was happy, but embarrassed; Cecelia, joyous and natural. (Henry Wadsworth Longfellow).
.當卡瓦納出現(xiàn)時，愛麗斯很高興但有點窘迫；切切里，快樂而自然. （亨利·沃茲沃斯·朗費羅）。

Unaffected implies sincerity and lack of affectation:
Unaffected 指真誠而不做作：
例句：
.With men he can be rational and unaffected, but when he has ladies to please, every feature works. (Jane Austen).
.和男人們在一起他可以相當真誠和理智，但當他要討小姐們歡心時他會極盡諂媚之能事. （簡·奧斯?。?/br>
Guileless signifies absence of insidious or treacherous cunning:
Guileless 強調(diào)沒有隱患或奸詐陰險：
例句：
a harmless, honest, guileless creature;
無害的、誠實的、坦率的小家伙；

例句：
a guileless, disarming look.
真誠的化解敵意的一瞥。

Artless stresses absence of plan or purpose, as to mislead,and suggests a lack of concern for or awareness of the reaction produced in others:
Artless 強調(diào)無計劃或目的，引起誤導，并有對別人的反應(yīng)缺乏關(guān)心或意識的意思：
例句：
a woman of artless grace and simple goodness.
淡漠雅致而又淳樸善良的女子