Doubt (dowt) mythical English creature, half purposeful, half anxious.

Doubtful, doubts were said to have huge appetites, but little interest in pronouns or prepositions, believing them to be constructs of their human suppressors

In fairness, they also knew that humans who tried to suppress doubts very rarely succeeded.

Doubtless, describing a situation where a either no doubts remained, or possibly one fewer, for example, “One doubtless..”

Mrs Doubtfire was a mass murderer and arsonist, there, I’ve said it.

Doubting, patois for being like a doubt.

Doubts were thought to be extinct, but in the morning they always returned.