weighty

/ˈweɪdi/

Other forms: weightier; weightiest

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. adjective

   having relatively great weight; heavy
   “a weighty load”

   “a weighty package”

   antonyms:

   weightless

   having little or no weight or apparent gravitational pull; light
2. adjective

   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
3. adjective

   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
4. adjective

   powerfully persuasive
   “a weighty argument”

   synonyms: cogent, telling

   persuasive

   intended or having the power to induce action or belief
5. adjective

   excessively large
   “a weighty man”

   synonyms: corpulent, obese, rotund

   fat

   having an (over)abundance of flesh