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See more synonyms for weighty on Thesaurus.com
adjective, weight·i·er, weight·i·est.
  1. having considerable weight; heavy; ponderous: a weighty bundle.
  2. burdensome or troublesome: the weightier cares of sovereignty.
  3. important or momentous: weighty negotiations.
  4. having or exerting influence, power, etc.; influential: a weighty merchant of Boston.
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Origin of weighty

First recorded in 1480–90; see origin at weight, -y1
Related formsweight·i·ly, adverbweight·i·ness, nounun·weight·y, adjective


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1, 3. light. 3. unimportant.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for weightiness

Historical Examples

  • Jeremiah then appears with all his weightiness of matter and solemnity of manner.

    The Wesleyan Methodist Pulpit in Malvern

    Knowles King

  • And the weightiness of these considerations is not diminished when we relate them to the special needs of the day.

    Nature Mysticism

    J. Edward Mercer

  • Mrs. Wiley shook her head with the air of understanding the weightiness of her friend's excuse.

  • I opened my box: then indeed I perceived the secret of its weightiness.

  • He had neither the unswerving sense of style, nor the weightiness of touch, that mark the perfect craftsman.

    Musical Portraits

    Paul Rosenfeld

British Dictionary definitions for weightiness


adjective weightier or weightiest
  1. having great weight
  2. important or momentous
  3. causing anxiety or worry
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Derived Formsweightily, adverbweightiness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for weightiness



"important, serious, grave," late 15c., from weight + -y (2).

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Online Etymology Dictionary, © 2010 Douglas Harper