adjective, weight·i·er, weight·i·est.

having considerable weight; heavy; ponderous: a weighty bundle.
burdensome or troublesome: the weightier cares of sovereignty.
important or momentous: weighty negotiations.
having or exerting influence, power, etc.; influential: a weighty merchant of Boston.

Origin of weighty

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

Synonyms for weighty

Antonyms for weighty

1, 3. light. 3. unimportant.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for weighty

Contemporary Examples of weighty

Historical Examples of weighty

  • "Let them be supplied with all that is heavy and weighty in the ship," said Sir Nigel.

    The White Company

    Arthur Conan Doyle

  • He brought his chair to a level and pounded the desk with a weighty fist.

    Within the Law

    Marvin Dana

  • And if they essay to do so, why should not my word be at least as weighty as theirs?

    In the Valley

    Harold Frederic

  • But Mr Tite Barnacle was a buttoned-up man, and consequently a weighty one.

    Little Dorrit

    Charles Dickens

  • His words on the subject are weighty, and worthy of being held in remembrance.


    Samuel Smiles

British Dictionary definitions for weighty


adjective weightier or weightiest

having great weight
important or momentous
causing anxiety or worry
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 weighty

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

Online Etymology Dictionary, © 2010 Douglas Harper