suspect

Compared meaning: a person linked to a crime (noun).

比较义项：涉嫌或被控犯罪的人（名词）。

• defendant

  Refers to a person formally charged with a crime and appearing in court to answer the charges; used specifically in trial/courtroom contexts.

  指已被正式起诉、需要出庭应审的人；专用于审判、法庭语境。

  The defendant pleaded not guilty when the charges were read out in court.

  被告在法庭宣读罪名时表示不认罪。

• suspect 本词

  Refers to a person the police believe may have committed a crime, usually before any formal charge is made; used in investigation contexts.

  指警方认为可能作案、通常尚未被正式起诉的人；用于案件侦查语境。

  Detectives questioned the suspect for hours before releasing him.

  警探审问了嫌疑人好几个小时才将他释放。

Defendant and suspect both name a person connected to a crime, but at different stages. A suspect is a person the police believe may have committed a crime, before any formal charge. A defendant is a person charged with a crime who appears in court.

这两个词都跟刑事案件中的人物身份有关，但所处阶段不同：suspect 指警方怀疑作案、尚未被正式起诉的人，常见于案件侦查阶段；defendant 指已被正式起诉、需要出庭受审的人，常见于法庭审判阶段。

Compared meaning: causing doubt about truth or honesty (adjective).

比较义项：令人怀疑、不确定是否真实或可信（形容词）。

• dubious

  Suggests a mild, personal feeling of doubt or hesitation before deciding whether to trust or believe something; frequently follows 'feel' and pairs with 'about', showing a cautious, wait-and-see attitude.

  表示一种较温和、主观的怀疑或犹豫态度，通常出现在决定是否相信某事之前；常与 feel 连用，后接 about，体现一种谨慎观望的心态。

  I felt dubious about the stranger's offer of a free vacation.

  我对那个陌生人提供免费假期的提议感到将信将疑。

• problematic

  Focuses on something causing practical trouble, difficulty, or disagreement rather than moral doubt; describes situations, behaviors, or issues that need to be dealt with, not necessarily dishonest ones.

  强调某事造成实际的麻烦、困难或争议，而非道德上的怀疑；用来描述需要处理的情况或行为，未必涉及不诚实。

  His constant lateness became problematic for the whole team.

  他持续迟到的问题让整个团队都感到棘手。

• questionable

  Implies the thing may be improper, dishonest, or of poor quality, inviting moral or ethical doubt; often modifies decisions, methods, or behavior that people criticize.

  暗示该事物可能不当、不诚实或质量欠佳，带有道德或伦理上的质疑；常用来修饰受人批评的决定、做法或行为。

  His explanation for being late seemed pretty questionable to everyone.

  他迟到的解释在大家看来相当可疑。

• suspect 本词

  Signals a specific, active suspicion that something is fake, false, or not trustworthy, often after closer examination; commonly used predicatively, as in 'sounded suspect' or 'looked suspect'.

  表示经过仔细审视后，对某事是假的、虚假的或不可信产生具体、主动的怀疑；常作表语使用，如 sounded suspect 或 looked suspect。

  His account of the accident sounded suspect from the very beginning.

  他对事故的描述从一开始听起来就很可疑。

Dubious, problematic, questionable, and suspect show doubt, but with different strength. Dubious is a mild, personal feeling of doubt. Problematic means something causes trouble. Questionable suggests something may be dishonest. Suspect signals suspicion that something is false. Suspect's noun and verb senses are not compared.

这些词都表示对真实性、可信度或诚实度有所怀疑，但语气强弱和使用场合不同：dubious 语气较温和，多指主观上感到不确定或将信将疑；problematic 强调事情本身会带来麻烦或争议，不一定涉及诚实问题；questionable 语气较重，暗示对方可能不诚实或做法不当；suspect 强调经过审视后具体地怀疑某事是假的或不可信的。这里不比较 suspect 作名词表示嫌疑人、或作动词表示怀疑、猜测的用法。