keenly
/ˈkiːnli/ adverb
Etymology
From Middle English kenely, kenliche, from Old English cēnlīċe (“keenly, boldly, courageously”), equivalent to keen + -ly. Cognate with Saterland Frisian köinlik (“boldly”), archaic German kühnlich (“bravely”).
Webster’s 1913
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “keenly”, CC BY-SA 4.0. Details