WEIGHTY Synonyms: 219 Similar and Opposite Words

Q: How does the adjective 'weighty' differ from other similar words?

Some common synonyms of weighty are cumbersome , cumbrous , heavy , and ponderous . While all these words mean "having great weight," weighty suggests having actual and not just relative weight. // a load of weighty boxes

Q: How are the words 'cumbrous' and 'cumbersome' related as synonyms of 'weighty'?

Both cumbrous and cumbersome imply heaviness and bulkiness that make for difficulty in grasping, moving, carrying, or manipulating. // wrestled with the cumbrous furniture // early cameras were cumbersome and inconvenient

Q: When can 'heavy' be used instead of 'weighty'?

In some situations, the words heavy and weighty are roughly equivalent. However, heavy implies that something has greater density or thickness than the average of its kind or class. // a heavy child for his age

Q: When might 'ponderous' be a better fit than 'weighty'?

The synonyms ponderous and weighty are sometimes interchangeable, but ponderous implies having great weight because of size and massiveness with resulting great inertia. // ponderous elephants in a circus parade

weighty

adjective

ˈwā-tē

Definition of weighty next

as in serious

having a matter of importance as its topic interrupted a weighty discussion with a silly question

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in important

having great meaning or lasting effect choosing a college is a weighty decision

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Antonyms & Near Antonyms

as in massive

having great weight lifted the weighty sack and wondered what was in it

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as in solemn

not joking or playful in mood or manner the police office looked at me with a rather weighty expression

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Antonyms & Near Antonyms

as in influential

having power over the minds or behavior of others one of the weightiest figures in the field of pediatric medicine

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Antonyms & Near Antonyms

Synonym Chooser

How does the adjective weighty differ from other similar words?

Some common synonyms of weighty are cumbersome, cumbrous, heavy, and ponderous. While all these words mean "having great weight," weighty suggests having actual and not just relative weight.

a load of weighty boxes

How are the words cumbrous and cumbersome related as synonyms of weighty?

Both cumbrous and cumbersome imply heaviness and bulkiness that make for difficulty in grasping, moving, carrying, or manipulating.

wrestled with the cumbrous furniture

early cameras were cumbersome and inconvenient

When can heavy be used instead of weighty?

In some situations, the words heavy and weighty are roughly equivalent. However, heavy implies that something has greater density or thickness than the average of its kind or class.

a heavy child for his age

When might ponderous be a better fit than weighty?

The synonyms ponderous and weighty are sometimes interchangeable, but ponderous implies having great weight because of size and massiveness with resulting great inertia.

ponderous elephants in a circus parade

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of weighty However, Judge Cooper stopped short of ruling on the weightier questions of Beatty’s ability to vote during board meetings or the legality of the changes to the Kennedy Center. —

Steven Portnoy, ABC News, 28 Apr. 2026 If extended comfort is a top priority, the Bose cans are your best bet for long flights and extended listening, while Apple's weighty Max 2s are more likely to cause fatigue. —

Christian De Looper, PC Magazine, 18 Apr. 2026 Handling such weighty concepts, a less deft hand might have lapsed into melodrama. —

Tessa Solomon, ARTnews.com, 6 Apr. 2026 Inside, one side of the suitcase features a zipped compartment—useful for keeping toiletries and smaller items contained safely—while the other has a robust compression system with a notably sturdy strap and weighty steel buckle. —

Charley Ward, Condé Nast Traveler, 5 Apr. 2026 See All Example Sentences for weighty

Recent Examples of Synonyms for weighty

Adjective

The number of teams and bowls involved could shift as discussions become more serious.

— Scott Dochterman, New York Times, 15 May 2026
The announcement comes amid growing scrutiny over e-bikes and e-motorcycles across Southern California following several serious and fatal crashes involving young riders.

— Sydney Barragan, Oc Register, 14 May 2026