coltish (adj.)

• animated
• antic
• beardless
• boyish
• boylike
• childish
• childlike
• elvish
• exuberant
• frisky
• frolicsome
• gay
• girlish
• hearty
• impish
• kittenish
• lively
• maiden
• maidenly
• mischievous
• playful
• puckish
• puerile
• puppyish
• puppylike
• rollicking
• skittish
• spirited
• sportive
• sprightly
• vital
• vivacious
• waggish
• zestful
• zippy