I. ˈshə-dər intransitive verb
( shud·dered ; shud·der·ing -d(ə-)riŋ)
Etymology: Middle English shoddren; akin to Old High German skutten to shake and perhaps to Lithuanian kutėti to shake up
Date: 13th century
: to tremble convulsively : shiver , quiver
II. noun
Date: 1607
: an act of shuddering
• shud·dery -d(ə-)rē adjective