Meaning

noun an almost pleasurable sensation of fright

noun an involuntary vibration (as if from illness or fear)

verb shake, as from cold

originFrom Middle English schoderen, from Middle Dutch schudderen and/or Middle Low German schodderen, iterative forms of the verb at hand in Dutch schudden, Low German schüdden (both “to shake”), German schütten (“to pour”), from Proto-Germanic *skudjaną, from Proto-Indo-European *skewdʰ-. From Low German are also borrowed German schaudern (“to shudder”), Danish skudre.

Etymology from Wiktionary, CC BY-SA 3.0