secret (n.)

14世纪晚期, 来自拉丁文 secretus “分开, 撤回; 隐藏, 隐蔽, 私密”, secernere 的过去分词“分开, 分开, 分割; 排除”, 来自 se- “没有, 分开”, 适当地“靠自己” (见 se-) + cernere “分开” (来自PIE词根 *krei- “筛选”, 因此是“辨别, 区分” ).

作为形容词来自14世纪末, 来自法语 secret, 名词的形容词用法. Open secret 来自1828年. Secret agent 最早记载于1715年; secret service 来自1737年; secret weapon 来自1936年.

secret (v.)

“保守秘密” (在OED中描述为“过时” ), 1590年代, 来自 secret (n.). 相关链接: Secreted; secreting.

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Definitions of secret from WordNet
secret (adj.)
conducted with or marked by hidden aims or methods;
a secret agent
secret missions
secret sales of arms
Synonyms: clandestine / cloak-and-dagger / hole-and-corner / hugger-mugger / hush-hush / surreptitious / undercover / underground
secret (adj.)
not open or public; kept private or not revealed;
secret talks
secret ingredients
a secret formula
secret (adj.)
not openly made known;
a secret marriage
a secret bride
Synonyms: unavowed
secret (adj.)
communicated covertly;
secret messages
their secret signal was a wink
secret (adj.)
not expressed;
secret (or private) thoughts
Synonyms: private
secret (adj.)
designed to elude detection;
the secret compartment in the desk
a secret passage
Synonyms: hidden
secret (adj.)
hidden from general view or use;
a secret garden
Synonyms: privy / secluded
secret (adj.)
(of information) given in confidence or in secret;
their secret communications
Synonyms: confidential
secret (adj.)
indulging only covertly;
a secret alcoholic
secret (adj.)
having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding;
the secret learning of the ancients
secret (adj.)
the next to highest level of official classification for documents;
secret (n.)
something that should remain hidden from others (especially information that is not to be passed on);
the combination to the safe was a secret
he tried to keep his drinking a secret
secret (n.)
information known only to a special group;
the secret of Cajun cooking
Synonyms: arcanum
secret (n.)
something that baffles understanding and cannot be explained;
it remains one of nature's secrets
Synonyms: mystery / enigma / closed book