Definition of mettlesome:
plucky, granular, gutsy, grainy, gallant, heroic, granulose, risque, lame, action, gamey, undaunted, dauntless, brave, feelings, intrepid, spunky, fortitudinous, spicy, enlivened, gutty, fear, bouncy, mealy, juicy, bold, gamy, feisty, hardy, gimpy, doughty, stouthearted, blue, dauntless, valorous, gritty, valiant, valiant, courageous, vibrant, fearless, game, audacious, bouncing, naughty, halting, halt, high-spirited, high, peppery, farinaceous, crippled, racy, unafraid, coarse-grained, spirited.
- energetic (part of speech: adjective)
- strong (part of speech: adjective)
vigorous (part of speech: adjective)
- lively (part of speech: adjective)
- "Explorers of the Dawn", Mazo de la Roche.
Tom would not easily have believed it possible to travel so fast by night, but he trusted himself implicitly to the guidance of his comrade; and the strong, mettlesome, sure- footed horse he rode seemed to make nothing either of his solid weight, or of the distance they had to go.- "Tom Tufton's Travels", Evelyn Everett-Green.
- "The Awakening of Helena Richie", Margaret Deland.