candid

形容词 candid:

1. characterized by directness in manner or speech; without subtlety or evasion
   同义词：blunt, forthright, frank, free-spoken, outspoken, plainspoken, point-blank, straight-from-the-shoulder
2. informal or natural; especially caught off guard or unprepared
3. openly straightforward and direct without reserve or secretiveness
   同义词：open, heart-to-heart

1. In private, I gave them my candid opinion.
   私下里，我对他们直言相告
2. Give me a candid hearing.
   请你公正地听我说。
3. Not forthright and candid; devious.
   不坦率的不直截了当的、不坦白的; 欺骗的
4. A freelance photographer who doggedly pursues celebrities to take candid pictures for sale to magazines and newspapers.
   猎奇摄影者为了偷拍镜头卖给杂志和报纸的顽强地追踪某些庆祝活动的自由摄影者

can.did

adj.（形容词）
Free from prejudice; impartial.
公正的：不囿于偏见的；公正的
Characterized by openness and sincerity of expression; unreservedly straightforward:
坦率的：以开朗和诚挚为特征的；毫无保留地开朗直率的：
例句：
In private, I gave them my candid opinion.See Synonyms at frank
私下里，我对他们直言相告参见 frank

Not posed or rehearsed:
偷拍的：未摆好姿势的或事先未安排好的：
例句：
a candid snapshot.
一张偷拍的快照

n.（名词）
An unposed informal photograph.
偷拍的照片：一张事先未摆好姿势的非正式照片

来源：
Latin candidus [glowing, white, pure, guileless]
拉丁语 candidus [发微光的，白的，纯洁的，坦率的]
from candôre [to shine] * see kand-
源自 candôre [发光] *参见 kand-

【引伸】
can.didly
adv.（副词）
can.didness
n.（名词）