Supplemental means the same as supplementary . (mainly AM FORMAL)
You’ll probably be able to buy ~ insurance at an extra cost...
ADJ: ADJ n
Supplemental means the same as supplementary . (mainly AM FORMAL)
You’ll probably be able to buy ~ insurance at an extra cost...
ADJ: ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012