Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “doubtful”

See all translations

doubtful

adjective uk   /ˈdaʊt.fəl/ us  
B2 If you are doubtful about something, you are uncertain about it: The teacher is doubtful about having parents working as classroom assistants.B2 If a situation is doubtful, it is unlikely to happen or to be successful: It is doubtful whether/if they ever reached the summit before they died. It was doubtful that the money would ever be found again.
More examples
doubtfully
adverb uk   /-i/ us  
"Are you telling me the truth?" he asked doubtfully.
(Definition of doubtful from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of doubtful?
Add Cambridge dictionaries to your browser to your website

Definitions of “doubtful” in other dictionaries

Word of the Day

make believe

believing or imagining things that appear to be attractive or exciting, but are not real

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

showrooming noun

February 23, 2015
the activity of examining a product in a physical store and then making the purchase with an online retailer Amazon’s new smartphone is specifically designed to make showrooming fast and easy.

Read More