weighty

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.

Definitions of weighty
1

adj having relatively great weight; heavy

“a weighty load”
“a weighty package”
Antonyms:
weightless
having little or no weight or apparent gravitational pull; light

adj of great gravity or crucial import; requiring serious thought

“the weighty matters to be discussed at the peace conference”
Synonyms:
grave, grievous, heavy
important, of import
of great significance or value

adj weighing heavily on the spirit; causing anxiety or worry

weighty problems”
Synonyms:
heavy
marked by great psychological weight; weighted down especially with sadness or troubles or weariness

adj powerfully persuasive

“a weighty argument”
Synonyms:
cogent, telling
persuasive
intended or having the power to induce action or belief

adj excessively fat

“a weighty man”
Synonyms:
corpulent, obese, rotund
fat
having an (over)abundance of flesh

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.