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Synonyms

weighty

American  
[wey-tee] / ˈweɪ ti /

adjective

weightier, weightiest
  1. having considerable weight; heavy; ponderous.

    a weighty bundle.

    Antonyms:
    light
  2. burdensome or troublesome.

    the weightier cares of sovereignty.

  3. important or momentous.

    weighty negotiations.

    Synonyms:
    consequential, grave, serious, significant
    Antonyms:
    unimportant, light
  4. having or exerting influence, power, etc.; influential.

    a weighty merchant of Boston.


weighty British  
/ ˈweɪtɪ /

adjective

  1. having great weight

  2. important or momentous

  3. causing anxiety or worry

"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

Synonym Usage

See heavy.

Other Word Forms

Etymology

Origin of weighty

First recorded in 1480–90; see origin at weight, -y 1

Explanation

Weighty things are either very heavy or extremely important and worrisome. Putting your weighty cat on a diet might be a weighty issue that nags at you. If your luggage is too weighty, you'll have to pay an extra fee at the airport. And if you've got a mind full of weighty problems, you won't be able to fall asleep on your long flight. Sometimes this adjective is also used to mean "influential," like the weighty influence your SAT scores might have on your chances of being accepted at a competitive college.

Keep Reading on Vocabulary.com

Vocabulary lists containing weighty

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

This weighty destiny also explains why the Higashi villagers went out of their way to keep Yuru close.

From Salon Jul. 18, 2026

But while they are worth remembering, emphasizing these weighty issues in such a small show does them—and the art—an injustice.

From The Wall Street Journal Jul. 3, 2026

On nearly every weighty promise, with the exception of those beer prices, Arte Moreno has failed.

From Los Angeles Times May 31, 2026

Pentagon chief Pete Hegseth is the headline speaker at Asia's premier defence summit opening Friday, but China's top officials aren't expected despite weighty questions like Taiwan and the war in Iran.

From Barron's May 29, 2026

When he replied, his words were weighty and spoken with a grim resolve.

From "Ophelia" by Lisa Klein

A couple of the disputes are a bit weightier than a question of whether someone’s yard goes to here . . . or to here.

From The Wall Street Journal Feb. 12, 2026

She’s only in the movie for about half an hour, and though her character drives the action and ends the movie in spectacular fashion, that wasn’t enough in a category flush with weightier work.

From Los Angeles Times Jan. 22, 2026

The couple are set to return to the presidential residence, but this time Mutharika's in-tray will be far weightier.

From BBC Sep. 24, 2025

He argued that some of the removals might stand a court test as the case progresses, noting that some of the books dealt more with “juvenile, flatulent humor” than weightier subjects.

From Seattle Times Jun. 6, 2024

My body has grown heavy, which makes each step weightier than the previous one.

From "Dry" by Neal Shusterman and Jarrod Shusterman

The city's historically lucrative wholesale and retail trade remains one of its weightiest sectors, accounting for almost 25 percent of GDP in the first nine months of 2024.

From Barron's Mar. 1, 2026

For nearly 500 years the Court of Session has considered the thorniest and weightiest matters of the moment.

From BBC Sep. 19, 2023

Opinionpalooza, aka June, aka the end of the Supreme Court term, when the year’s weightiest opinions tend to come out.

From Slate Jun. 1, 2023

Admittedly, the lawsuit — essentially, a dispute among insurers over the bill for all that cracked fiberglass and teak — won’t be the weightiest matter heard in federal court in Seattle.

From Seattle Times May 28, 2023

The weightiest of all was marriage, and that, in my quality of heiress, I found perplexing to a degree.

From A Transient Guest and Other Episodes by Saltus, Edgar

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