Synonyms & Antonyms of weighty

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

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

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

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Frequently Asked Questions About weighty

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

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Time Traveler for weighty

Time Traveler

The first known use of weighty was in the 15th century

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Thesaurus Entries Near weighty

weights (down)


weigh (upon)

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Cite this Entry

“Weighty.” Thesaurus, Merriam-Webster, Accessed 22 Oct. 2021.

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More from Merriam-Webster on weighty

Nglish: Translation of weighty for Spanish Speakers

Britannica English: Translation of weighty for Arabic Speakers


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