Supplementary information includes adverbs and things that function as adverbs.

Good personal investments may provide supplemental income in retirement.

Scientists called the use of dexamethasone, normally used to reduce inflammation in patients with arthritis and other diseases, a "major breakthrough" in the treatment of patients infected by the coronavirus who have been hospitalized and need the use of a ventilator or supplemental oxygen.

What sort of independent study should I do to supplement classes?

Everyone who works has the right to just and favourable remuneration ensuring for himself and his family an existence worthy of human dignity, and supplemented, if necessary, by other means of social protection.

There are only food supplements in that mayonnaise!

Belladonna is sold as a dietary supplement, one that I cannot imagine ever taking.

You may need a supplementary dose after six months.

He supplemented his lecture with a booklet.

Farmers often moonlight to supplement their incomes.