Save Type Surname (from location) Usage English Pronounced Pron. [ˈʌndɚ.ˈdaʊn] [key·simplify] Other Forms FormsUnderdoun, Underdoune Meaning & History topographic name for someone who lived "(at the) foot of the hill" or a habitational name from a place called Underdown. From Middle English, Old English under "under, beneath" and Middle English doun (Old English dun) "hill".
indicate the level to which a name has been verified.