Supplementary and Useful

Supplementary adjective - Available to supply something extra when needed.

Useful and supplementary are semantically related. In some cases you can use "Useful" instead an adjective "Supplementary".

Nearby Words: supplement, supplemental, supplemented, supplementation

Useful adjective - Capable of being put to use or account.

Supplementary and useful are semantically related. Sometimes you can use "Supplementary" instead an adjective "Useful".

Nearby Words: use, useless, used, usefulness, usefully