How to Say "don't doubt" in Spanish
The Spanish word for “don't doubt” is “dudas” — A2 level. This is a very common word in everyday Spanish.

Examples
Si dudas de mi compromiso, solo tienes que decírmelo.
If you doubt my commitment, you just have to tell me.
Veo que dudas sobre qué camino tomar.
I see that you are hesitating about which road to take.
Dudar and Prepositions
When you doubt a person or a fact, you usually need the preposition de (of/about): 'Dudas de lo que dice.' (You doubt what he says.)
Doubt and Subjunctive
The verb dudar (to doubt) often requires the next verb to be in a special form called the Subjunctive, because it expresses uncertainty: 'Dudo que él venga.' (I doubt that he comes.)
Forgetting 'de'
Mistake: “Dudas su palabra.”
Correction: Dudas de su palabra. (The verb *dudar* often demands the preposition *de*.)
Related Translations
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