Speak and write with confidence.

To help you avoid using the same word too repetitively, redundantly, recurrently, incessantly, etc., etc.

Why synonyms can be useful

Your writing can sound boring if you continually keep repeating the same words. When you create sentences, you can make them more interesting by using words that mean the same as the word you are speaking about. This allows you to add flavor to your writing.

In order to make language a lot more expressive and interesting you should try to vary the words you use as often as you can.

Synonyms for (adjective) doubtful

Synonyms: doubtful, dubious Definition: fraught with uncertainty or doubt Usage: they were doubtful that the cord would hold; it was doubtful whether she would be admitted; dubious about agreeing to go

Hypernyms: uncertain, unsure, incertain Definition: lacking or indicating lack of confidence or assurance Usage: uncertain of his convictions; unsure of himself and his future; moving with uncertain (or unsure) steps; an uncertain smile; touched the ornaments with uncertain fingers

Synonyms: doubtful, dubious, dubitable, in question Definition: open to doubt or suspicion Usage: the candidate's doubtful past; he has a dubious record indeed; what one found uncertain the other found dubious or downright false; it was more than dubitable whether the friend was as influential as she thought- Karen Horney

Hypernyms: questionable Definition: subject to question Usage: questionable motives; a questionable reputation; a fire of questionable origin

Synonyms: tentative, doubtful Definition: unsettled in mind or opinion Usage: drew a few tentative conclusions

Hypernyms: unsettled Definition: still in doubt Usage: an unsettled issue; an unsettled state of mind