weighty

adjective

ˈwā-tē 

weightier; weightiest

1

a

: of much importance or consequence : momentous

a weighty problem

b

: solemn

2

a

: weighing a considerable amount

b

: heavy in proportion to its bulk

weighty metal

3

: powerful, telling

weighty arguments

weightily

ˈwā-tə-lē 

adverb

weightiness

ˈwā-tē-nəs 

noun

Synonyms

• serious
• important

Choose the Right Synonym for weighty

heavy, weighty, ponderous, cumbrous, cumbersome mean having great weight.

heavy implies that something has greater density or thickness than the average of its kind or class.

a heavy child for his age

weighty suggests having actual and not just relative weight.

a load of weighty boxes

ponderous implies having great weight because of size and massiveness with resulting great inertia.

ponderous elephants in a circus parade

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

Examples of weighty in a Sentence

She grabbed a weighty book off the shelf.

The film deals with some weighty issues.

Those are weighty arguments in your favor.

He was a weighty figure in the art world.

Recent Examples on the Web

The weighty Guerlain Rouge G case comes in a wide variety of fabrics, colors, and textures—glossy tortoiseshell, embossed gold, glittering crystals—that house one of the most luxurious lipstick formulas on the market. —Sophia Panych, Allure, 16 Sep. 2025

Nothing looks more out of place than a bright yellow doorknob in a room full of dark and weighty antique furniture. —Brandee Gruener, Southern Living, 16 Sep. 2025

Arias weaves a lovely tale of unrequited love that isn’t as unrequited in this sapphic, slow-burn romance that also touches on weighty topics, including divorce and grief. —Mia Sosa, PEOPLE, 15 Sep. 2025

On the limited series front, Netflix’s weighty crime drama Adolescence dominated with six total awards, including Best Limited or Anthology Series, Best Actor (Stephen Graham), Best Supporting Actor (Owen Cooper), Best Supporting Actress (Erin Doherty), Best Directing, and Best Writing. —Lauren Huff, Entertainment Weekly, 15 Sep. 2025

Word History

First Known Use

15th century, in the meaning defined at sense 1a

Rhymes for weighty

• eighty
• kati
• katy
• platy
• slaty

Kids Definition

weighty

adjective

ˈwāt-ē 

weightier; weightiest

1

: having much weight : heavy

2

a

: of much importance : serious

weighty problems

b

: showing seriousness : solemn

a weighty expression on her face

3

: having the power to influence or persuade

weighty arguments

weightily

ˈwāt-ᵊl-ē 

adverb

weightiness noun