keen or ardent in desire or feeling; impatiently longing

I am eager for news about them. He is eager to sing.

characterized by or revealing great earnestness

an eager look.

Obsolete . keen; sharp; biting.

noun

apathy , disinterest

noun

alacrity , ambition , anticipation , ardor , avidity , earnestness , excitement , fervor , greediness , gusto , heartiness , hunger , impatience , impetuosity , intentness , keenness , longing , promptness , quickness , solicitude , thirst , vehemence , voracity , yearning , zeal , zest , zing * , devotion , empressement , enthusiasm , fervency , intensity , intentness ardor , readiness , urgency