IPA: /ʌnˈdaʊtɪd/
KK: /ʌnˈdaʊtɪd/
Accepted as true or certain without any doubt.
Her talent for music is undoubted, as she has won many awards.
Undoubted → It is formed from "un-" (meaning not) and "doubted" (from Old French *douter*, meaning to fear or to be uncertain). The word "undoubted" means not having any doubt or uncertainty.
Think of 'not' ('un-') having any 'fear' or 'uncertainty' ('douter') — that's why undoubted means something that is certain.