Doubt, v.
Synonyms:
distrust, mistrust, surmise, suspect.
To doubt is to lack conviction. Incompleteness of evidence may compel one to doubt, or some perverse bias of mind may incline him to. Distrust may express simply a lack of confidence; as, I distrust my own judgment; or it may be nearly equivalent to suspect; as, I distrusted that man from the start. Mistrust and suspect imply that one is almost assured of positive evil; one may distrust himself or others; he suspects others. Mistrust is now rarely, if ever, used of persons, but only of motives, intentions, etc. Distrust is always serious; mistrust is often used playfully. Compare SUPPOSE. Compare synonyms for DOUBT, n.
Antonyms:
believe, confide in, depend on, depend upon, rely on, rely upon, trust.