Main Entry: in·ter·est·ed

Pronunciation: \ˈin-t(ə-)rəs-təd; ˈin-tə-ˌres-, ˈin-ˌtres-; ˈin-tərs-\

Function: adjective

Date: 1602

1 : having the attention engaged <interested listeners>
2 : being affected or involved <interested parties>

— in·ter·est·ed·ly adverb