HORSEBACK /ˈhɔːsˌbæk/ ► audio Scrabble 20 Words With Friends 21 Definition adverb on the back of a horse. — synonyms: ahorse, ahorseback noun the back of a horse. noun a narrow ridge of hills. — synonyms: hogback Examples “He rode horseback into town.” See all 415 words you can make from HORSEBACK → 9-letter words Words starting with H Words ending with K ← Unscramble different letters