Thesaurus

doubtful

adjective

Synonyms & Antonyms of doubtful

1 not feeling sure about the truth, wisdom, or trustworthiness of someone or something
  • he was doubtful about the decision to complete the project despite its mounting problems

Synonyms for doubtful

Words Related to doubtful

Phrases Synonymous with doubtful

Near Antonyms for doubtful

Antonyms for doubtful

2 giving good reason for being doubted, questioned, or challenged
  • the election results were highly doubtful, so an investigation was begun

Synonyms for doubtful

Words Related to doubtful

Near Antonyms for doubtful

Antonyms for doubtful

3 not likely to be true or to occur
  • our winning the championship increasingly looks like a doubtful outcome

Synonyms for doubtful

Words Related to doubtful

Near Antonyms for doubtful

Antonyms for doubtful

See the Dictionary Definition 

Choose the Right Synonym for doubtful

doubtful, dubious, problematic, questionable mean not affording assurance of the worth, soundness, or certainty of something. doubtful implies little more than a lack of conviction or certainty. doubtful about whether I said the right thing dubious stresses suspicion, mistrust, or hesitation. dubious about the practicality of the scheme problematic applies especially to things whose existence, meaning, fulfillment, or realization is highly uncertain. whether the project will ever be finished is problematic questionable may imply no more than the existence of doubt but usually suggests that the suspicions are well-grounded. a man of questionable honesty

Keep scrolling for more

Keep scrolling for more

More from Merriam-Webster on doubtful

Dictionary: Definition of doubtful

Spanish Central: Translation of doubtful

Nglish: Translation of doubtful for Spanish Speakers

Britannica English: Translation of doubtful for Arabic Speakers

Comments on doubtful

What made you want to look up doubtful? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to spread as a report or rumor

Get Word of the Day daily email!

Test Your Vocabulary

Confusing Words—A Quiz

  • alice with tweedle dee and tweedle dum
  • I invented a brand new toaster robot and ______ it "Sir Toasts-a-Lot."
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!