SURREPTITIOUSLY /sʌɹəpˈtɪʃəsli/ ► audio Scrabble 20 Words With Friends 23 Definition adverb in a surreptitious manner. — synonyms: sneakily See all 1625 words you can make from SURREPTITIOUSLY → 15-letter words Words starting with S Words ending with Y ← Unscramble different letters