intr.v. shud·dered, shud·der·ing, shud·ders
1. To shiver convulsively, as from fear or revulsion. See Synonyms at shake.
2. To vibrate; quiver: The airplane shuddered in the turbulence.
1. A convulsive shiver, as from fear or revulsion.
2. A vibration or trembling motion.
[Middle English shodderen, perhaps of Middle Dutch or Middle Low German origin.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.