"shudders" in the noun sense
1. frisson, shiver, chill, quiver, shudder, thrill, tingle
an almost pleasurable sensation of fright
"a frisson of surprise shot through him"
2. tremor, shudder
an involuntary vibration (as if from illness or fear)
"shudders" in the verb sense
1. shiver, shudder
shake, as from cold
"The children are shivering
2. shudder, shiver, throb, thrill
tremble convulsively, as from fear or excitement
Source: WordNet® (An amazing lexical database of English)
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