vigor (part of speech: noun)
ardency, industriousness, gusto, lustiness, exuberance, sprightliness, enthusiasm, passion, liveliness, puissance, verve, energy, zeal, spirit, activity, power, eagerness, zest, relish, earnestness, animation, agility, strength, vigor, potency, vim, excitement, agitation, fervency
- We saw the boat at last nearly in shore, and drove down to meet it: even the horse seemed to realize what a great day it was, and showed a disposition to friskiness, evidently as surprising to himself as to us. - "Deephaven and Selected Stories & Sketches", Sarah Orne Jewett.
- She believed that a certain amount of friskiness was as necessary to young human beings as it is to colts, but later both must be harnessed and made to work. - "A Country Doctor and Selected Stories and Sketches", Sarah Orne Jewett.
- There might be a certain amount of friskiness in that. - "News from the Duchy", Sir Arthur Thomas Quiller-Couch.