1
be unsuspected
作表语，表示某人或某事未被怀疑。
The spy was unsuspected for years.
那名间谍多年来一直未受怀疑。
不受怀疑的；无嫌疑的；意料之外的
先理解核心含义，再看它在真实句子里的用法。
不受怀疑的；无嫌疑的；意料之外的
not suspected or believed likely
The spy was unsuspected for years.
那名间谍多年来一直未受怀疑。
未被怀疑的；不令人怀疑的
Not suspected; not having raised suspicion.
The unsuspected cause of the noise was a small bird trapped in the chimney.
噪音那意想不到的原因是一只困在烟囱里的小鸟。
Her talent for drawing remained unsuspected until she entered a local contest.
她的绘画天赋一直未被察觉，直到她参加了一次本地比赛。
The mistake went unsuspected for months because the report was never checked.
这个错误数月来一直未被察觉，因为那份报告从未被检查过。
作表语，表示某人或某事未被怀疑。
The spy was unsuspected for years.
那名间谍多年来一直未受怀疑。
后接人或机构，常表示“在某人未察觉/未怀疑的情况下”。
He slipped out, unsuspected by the guards.
他溜了出去，未被守卫怀疑。
作定语时多表示“原先未料到的、暗藏的”。
There were unsuspected problems in the plan.
计划中有些未曾预料到的问题。
Not this
The unsuspected tourist walked into the trap.
Use this
The unsuspecting tourist walked into the trap.
unsuspected 是被动含义，表示“（被别人）不怀疑的”；描述某人没察觉危险、毫无戒心时，应使用现在分词形容词 unsuspecting（无戒心的）。
Not this
The thief looked unsuspected as he left the bank.
Use this
The thief looked unsuspicious as he left the bank.
looked 后应接描写外表或印象的形容词；unsuspected 表示“未被怀疑”这一被动状态，而 unsuspicious 才表示“看起来不令人起疑、无害的”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
未被发现的才能
She discovered an unsuspected talent for painting.
她发现了自己绘画方面未被发现的才能。
未料到的危险
The hikers walked into unsuspected danger.
徒步者走入了未料到的危险。
意想不到的深度
The novel reveals unsuspected depths of emotion.
这部小说揭示了意料之外的情感深度。
意想不到的联系
The research found an unsuspected connection between diet and mood.
研究发现了饮食与情绪之间意想不到的联系。
未被察觉的疾病
The checkup revealed an unsuspected illness.
体检发现了未被察觉的疾病。
Use unsuspected naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
suspected 是‘被怀疑的’，un- 表否定，合起来就是‘不受怀疑的’；联想：没人怀疑你，所以结果常是‘意料之外的’。
语域：neutral 常见场景：书面语、正式叙述 该词多用于书面语或正式叙述中，表示未被怀疑或意料之外；日常口语中更常使用 not suspected 来表达。
以上六词均以相同的 /ɛktɪd/ 结尾，与 unsuspected 的尾音押韵：suspected /səˈspɛktɪd/、expected /ɪkˈspɛktɪd/、respected /rɪˈspɛktɪd/、inspected /ɪnˈspɛktɪd/、connected /kəˈnɛktɪd/、detected /dɪˈtɛktɪd/。注意拼写相近的 unexpected /ˌʌnɪkˈspɛktɪd/ 重音和元音不同，不押韵；unspected 不是标准英语单词。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.