German and Dutch: from Hasso, a pet form of the Germanic
personal name Hadubert, or of some other
compound personal name beginning with hadu ‘battle’, ‘strife’.
German: nickname for a bitter and vicious man, from Middle High
German haz ‘hatred’.
Jewish (Ashkenazic): from
German Hass ‘hatred’, one of names selected from vocabulary
words by government officials when surnames became compulsory.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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