|ən+ adjective
Etymology: Middle English undouteful, from un- (I) + douteful doubtful — more at doubtful
1. : not open to doubt : firmly established
an undoubtful pedigree
2. : feeling no doubt : confident
a child undoubtful of the stork — W.J.Locke
|ən+ adjective
Etymology: Middle English undouteful, from un- (I) + douteful doubtful — more at doubtful
1. : not open to doubt : firmly established
an undoubtful pedigree
2. : feeling no doubt : confident
a child undoubtful of the stork — W.J.Locke
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012