形容詞 candid:

1. characterized by directness in manner or speech; without subtlety or evasion
   同義詞：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
   同義詞：open, heart-to-heart

1. In private, I gave them my candid opinion.
   私下里，我對(duì)他們直言相告
2. Give me a candid hearing.
   請(qǐng)你公正地聽我說。
3. Not forthright and candid; devious.
   不坦率的不直截了當(dāng)?shù)?、不坦白? 欺騙的
4. A freelance photographer who doggedly pursues celebrities to take candid pictures for sale to magazines and newspapers.
   獵奇攝影者為了偷拍鏡頭賣給雜志和報(bào)紙的頑強(qiáng)地追蹤某些慶?；顒?dòng)的自由攝影者

can.did

adj.（形容詞）
Free from prejudice; impartial.
公正的：不囿于偏見的；公正的
Characterized by openness and sincerity of expression; unreservedly straightforward:
坦率的：以開朗和誠(chéng)摯為特征的；毫無(wú)保留地開朗直率的：
例句：
In private, I gave them my candid opinion.See Synonyms at frank
私下里，我對(duì)他們直言相告參見 frank

Not posed or rehearsed:
偷拍的：未擺好姿勢(shì)的或事先未安排好的：
例句：
a candid snapshot.
一張偷拍的快照

n.（名詞）
An unposed informal photograph.
偷拍的照片：一張事先未擺好姿勢(shì)的非正式照片

來源：
Latin candidus [glowing, white, pure, guileless]
拉丁語(yǔ) candidus [發(fā)微光的，白的，純潔的，坦率的]
from candôre [to shine] * see kand-
源自 candôre [發(fā)光] *參見 kand-

【引伸】
can.didly
adv.（副詞）
can.didness
n.（名詞）