1) Active 2) Agile 3) Alert 4) Brisk 5) Full of spirit and vitality 6) Lively 7) Lively, active 8) Nimble 9) Quick 10) Spirited 11) Supple Found on https://www.crosswordclues.com/clue/sprightly
• (superl.) Sprightlike, or spiritlike; lively; brisk; animated; vigorous; airy; gay; as, a sprightly youth; a sprightly air; a sprightly dance. Found on http://thinkexist.com/dictionary/meaning/sprightly/
Spright'ly adjective [ Compar. Sprightlier ; superl. Sprightliest .] [ See Sprite .] Sprightlike, or spiritlike; lively; brisk; animated; vigorous; airy; gay; as, a sprightly youth; a sprightly air; a sprightly... Found on http://www.encyclo.co.uk/webster/S/174