Synonyms of keenly

1 Syllable
hard
2 Syllables
shrewdly, sharply
3 Syllables
alertly, steadily, rowdily, artfully, intently, searchingly, trickily, foxily, closely, prudently, watchfully, fixedly
4 Syllables
discerningly, boisterously, sagaciously, acutely, guilefully
5 Syllables
comprehendingly, perspicaciously, intelligently, deceptively, attentively, intellectually