Word · CEFR B2 · Frequency #4664
Fully loadeddoubtful
怀疑的；拿不准的
核心释义
Feeling or showing doubt; uncertain in opinion.
- 1.
不确定的,或引起怀疑的。
Subject to, or causing doubt.
- 2.
可疑的,值得怀疑的
open to doubt or suspicion; ; ; ; - Karen Horney
- 3.
感到或表现出怀疑的,持怀疑态度的。
Experiencing or showing doubt, skeptical.
- 4.
充满不确定或怀疑的
fraught with uncertainty or doubt
- 5.
未决定的或结果不确定的。
Undecided or of uncertain outcome.
- 6.
犹豫不决的,主意未定的
unsettled in mind or opinion
- 7.
不太可能的。
Improbable or unlikely.
- 8.
可疑的,或品质不端的。
Suspicious, or of dubious character.
可疑的；不确定的；不可靠的；不大可能的；未定的；难以预料的；不确定的,或引起怀疑的。；可疑的,值得怀疑的
用法In use
I'm doubtful about his ability to finish the project on time.
用法提示：doubtful 表示“怀疑的”，后接介词 about。
It is doubtful whether the meeting will be held today.
用法提示：doubtful 表示“不确定的”，常用于 It is doubtful whether... 句型。
The authenticity of the document is doubtful.
用法提示：doubtful 表示“可疑的”，直接作表语。
the candidate's doubtful past
they were doubtful that the cord would hold
it was doubtful whether she would be admitted
be doubtful about/of sth
相关词与表达Connections
搭配Collocations
- doubtful about
- 对…怀疑的
- She was doubtful about the plan's success.她对这个计划的成功表示怀疑。
- it is doubtful that
- …是值得怀疑的
- It is doubtful that he will arrive on time.他能否准时到达值得怀疑。
- a doubtful look
- 怀疑的表情
- He gave her a doubtful look.他向她投去怀疑的目光。
- doubtful quality
- 可疑的质量
- The product is of doubtful quality.这个产品质量可疑。
- remain doubtful
- 仍然怀疑
学习提示Learner notes
记忆技巧Memory Tip
想象心里装满怀疑（doubt）的状态，就是doubtful。
语境与语域Context & Register
通常用于表达怀疑或不确定的状态，既可用于客观评价（如可疑事物），也可用于主观感受（如内心不确定）。语域偏中性，在日常对话和正式书面语中都常见。
语法说明Grammar Note
常用于 be doubtful about 或后接 whether/if 从句表示怀疑；也可后接 that 从句。
发音与拼写Pronunciation & Spelling
All listed words share the unstressed suffix '-ful' pronounced /fəl/, but do not rhyme with 'doubtful' because the stressed vowel in 'doubtful' is /aʊ/, which differs from the stressed vowels in these words (e.g., /ɛ/, /eɪ/, /uː/, etc.).
用法优先级Usage priority
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.