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Definition of attenuate:

  1. Alt. of Attenuated
  2. To become thin, slender, or fine; to grow less; to lessen.
  3. To lessen the amount, force, or value of; to make less complex; to weaken.
  4. To make thin or less consistent; to render less viscid or dense; to rarefy. Specifically: To subtilize, as the humors of the body, or to break them into finer parts.
  5. To make thin or slender, as by mechanical or chemical action upon inanimate objects, or by the effects of starvation, disease, etc., upon living bodies.


washy, enfeeble, reduced, bleached, vitiated, debilitate, sublimate, faded, washed-out, weakened, strong, decreased, undo, sap, hurt, devitalize, attenuated, enervate, diminished, water, weaken, undermine, tighten, rarefy, subtilize, lessened, thinned, unnerve.

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