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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:

It also helped show that an animated kids series can tackle weighty themes such as war, genocide, imperialism, sexism, propaganda and political corruption in a serialized story and be a hit.

From Los Angeles Times Sep. 1, 2026

Such safety considerations are particularly weighty for SUVs and trucks, which have longer stopping distances and can cause more damage during collisions.

From The Wall Street Journal Aug. 23, 2026

India's top judges often make news for their rulings or pronunciations on weighty matters of law.

From BBC Aug. 18, 2026

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

From Salon Jul. 18, 2026

“I observed you with General Lee. I would imagine that there are weighty technical matters that occupy your mind.”

From "The Killer Angels: The Classic Novel of the Civil War" by Michael Shaara

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

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

Many are even less charitable in their comprehension of the burden he will inherit, which has only become weightier with time.

From Salon Feb. 28, 2024

The game is faster, the crowds bigger, the stakes weightier, but Brown’s time playing in front of sparse crowds has helped his adjustment to the spotlight.

From Los Angeles Times Dec. 5, 2023

I wasn’t going anywhere until morning, at least, and I wanted to enjoy a few more minutes with my friends unburdened by weightier things.

From "Hollow City" by Ransom Riggs

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

"And so young!" went on Agnes, in a tone which implied the weightiest accusation.

From No Surrender by E. T. C. (Edward Theodore Chalmers) Werner

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