from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A shaking or vibrating movement, as of the earth.
  • n. A trembling or quivering effect: a tremor of aspen leaves.
  • n. An involuntary trembling or quivering, as from nervous agitation or weakness.
  • n. A nervous quiver or thrill: felt a tremor of joy.
  • n. A state or feeling of nervous agitation or tension.
  • n. A tremulous sound; a quaver.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A shake, quiver, or vibration.
  • n. An earthquake.
  • v. To shake or quiver excessively and rapidly or involuntarily; to tremble.

from the GNU version of the Collaborative International Dictionary of English

  • n. A trembling; a shivering or shaking; a quivering or vibratory motion.

from The Century Dictionary and Cyclopedia

  • n. In colonial furniture, a sort of hood or head-piece found on high cupboards and the like: probably derived from a French type.
  • n. A shaking or quivering caused by some external impulse; a close succession of short vibratory or modulatory movements; a state of trembling in a living object or substance: as, the tremor of the aspen-leaf.
  • n. An involuntary or convulsive muscular shaking, quaking, or quivering, as from weakness, disorder, or emotion.
  • n. A trembling, quivering, or quavering quality or effect: as, a tremor of light.
  • n. Synonyms Trepidation, Emotion, etc. (see agitation), quiver, quivering, quaking. See trepidation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an involuntary vibration (as if from illness or fear)
  • v. shake with seismic vibrations
  • n. shaking or trembling (usually resulting from weakness or stress or disease)
  • n. a small earthquake


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English, terror, from Old French, from Latin, a trembling, from tremere, to tremble.



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