(noun) a positive feeling of wanting to push ahead with something. Synonyms: avidity, avidness, keenness.
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Noun Definition 1
(noun) prompt willingness. Synonyms: readiness, zeal, forwardness. Examples: "Readiness to continue discussions." "They showed no eagerness to spread the gospel." "They disliked his zeal in demonstrating his superiority." "He tried to explain his forwardness in battle."