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，我對他們直言相告
2. Give me a candid hearing.
   請你公正地聽我說。
3. Not forthright and candid; devious.
   不坦率的不直截了當(dāng)?shù)摹⒉惶拱椎? 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紙的頑強地追蹤某些慶祝活動的自由攝影者

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：以開朗和誠摯為特征的；毫無保留地開朗直率的：
例句：
In private, I gave them my candid opinion.See Synonyms at frank
私下里，我對他們直言相告參見 frank

Not posed or rehearsed:
偷拍的：未擺好姿勢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的非正式照片

來源：
Latin candidus [glowing, white, pure, guileless]
拉丁語 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）