keenness
noun
1 the company has signalled its keenness to sign a deal:
eagerness, willingness, readiness, desire, wish, anxiety, impatience;
enthusiasm, fervour, wholeheartedness, zest, zeal, ardour, passion, devotion, avidity;
earnestness, diligence, assiduity, conscientiousness, intentness.
▷antonyms reluctance.
4 the keenness of his mind:
acuity, sharpness, subtlety, incisiveness, astuteness, perspicacity, perceptiveness, quick-wittedness, sharp-wittedness, shrewdness, penetration, insight, cleverness, discernment, intelligence, brightness, brilliance, canniness, sagacity.
▷antonyms dullness, obtuseness.
keenness Oxford Dictionary of English