Synonym: challenge, dispute, mistrust, question, suspect. Similar words: no doubt, without doubt, double, double up, double back, subtle, trouble, troubled. Meaning: [daʊt] 
n. 1. the state of being unsure of something 2. uncertainty about the truth or factuality of existence of something. v. 1. consider unlikely or have doubts about 2. lack confidence in or have doubts about.
n. 1. the state of being unsure of something 2. uncertainty about the truth or factuality of existence of something. v. 1. consider unlikely or have doubts about 2. lack confidence in or have doubts about. 
Random good picture Not show
(91) She was in doubt whether she was right.
(92) I doubt whether Jack could manage a sailing boat.
(93) She cast doubt on this news.
(94) I detected a hint of doubt in his voice.
(95) I don't doubt the girl's sincerity.
(96) No doubt the truth will come out one day.
(97) There can be no doubt whatever about it.
(98) There's no doubt about her suitability for the job.
(99) He disburdened his mind of doubt.
(100) There seems no doubt about it.
(101) Is there any doubt concerning his bona fides?
(102) I have no doubt that you will succeed.
(103) Doubt is not the opposite of faith—unbelief is.
(104) I don't doubt but she will win the race.
(105) Witnesses have cast doubt on the suspect's innocence.
(106) There is no reason to doubt of his honesty.
(107) I don't doubt your good faith.
(108) Ferdinand's second goal put the game beyond doubt.
(109) You can not doubt your own existence.
(110) The incident cast doubt on her motives and reliability.
(111) Her documentary casts serious doubt on Gilligan's conviction.
(112) Doubt stole up on me about his true capacity.
(113) He is responsible beyond a shadow of a doubt.
(114) There's little doubt in my mind that he's guilty.
(115) There seems no reason to doubt her story.
(115) Sentencedict.com is a sentence dictionary, on which you can find nice sentences for a large number of words.
(116) Without doubt she has working very hard.
(117) Doubt stole up on me about his truthfulness.
(118) The evidence proves beyond doubt that he is innocent.
(119) The authenticity of the letter is beyond doubt.
(120) 'Is there any doubt about it?' 'None whatsoever.'
More similar words: no doubt, without doubt, double, double up, double back, subtle, trouble, troubled, dour, do up, dough, hand out, hold out, in and out, weed out, stand out, send out, find out, washed out, spread out, tremendous.