Definition of without a doubt

Short definition: The phrase without a doubt is used to say that you are completely sure about something, leaving no room for hesitation or uncertainty, and it often adds confidence, emphasis, and clarity to what you are saying.

Looking for a clear and natural explanation of the phrase without a doubt? The phrase without a doubt is commonly used to express strong certainty and confidence. People say it when they feel completely sure about something and see no reason to question it. You will hear it in everyday conversation, formal speech, opinions, and writing. It often adds emphasis and makes a statement sound firm and convincing. Below, each meaning is explained in a calm and natural way, with enough detail to feel clear, human, and natural.

Forms: without a doubt
Related: certainly adv., definitely adv., surely adv.
Syllable: without a doubt

1. (Preposition phrase) Used to say that something is completely certain with no hesitation or uncertainty at all.

   Without a doubt is used to strongly emphasize that you are fully confident something is true, correct, or real, meaning there is no confusion, hesitation, or second guessing involved, and the speaker feels mentally settled about the statement being made.

   She is without a doubt the most reliable person on the team, always finishing her work carefully and on time.
   That decision was without a doubt the right one, even though it felt difficult at the moment.
   He will succeed without a doubt because of his discipline, patience, and long term effort.

   Synonyms: certainly, definitely, unquestionably, surely, beyond doubt, no question, absolutely, without question, clearly, for sure, beyond any doubt, undeniably
   Antonyms: maybe, possibly, uncertainly, doubtfully, not sure, with doubt, questionable, unclear, debatable, unsure, open to doubt, uncertain

2. (Preposition phrase) Used to add strong emphasis to an opinion judgment or personal belief.

   In opinions or personal statements, without a doubt is often used to make the speaker’s belief sound firm and confident, showing that they strongly stand behind what they are saying and are not leaving room for alternative views.

   This is without a doubt the best experience I have had in years, both professionally and personally.
   He said it was without a doubt the hardest challenge he had ever faced in his career.
   The movie is without a doubt worth watching if you enjoy thoughtful storytelling.

   Synonyms: in my opinion certainly, strongly believe, fully convinced, firmly believe, completely sure, clearly convinced, personally certain, deeply sure, strongly confident, fully assured, beyond personal doubt, strongly settled
   Antonyms: unsure opinion, mixed feelings, doubtful view, uncertain belief, hesitant opinion, open minded doubt, unclear judgment, weak confidence, uncertain stance, second thoughts, lack of certainty, wavering belief