Third person singular present tense of 'gussy,' meaning to dress up or decorate something fancily.
From the verb 'gussy' with standard English third-person singular ending -es, maintaining the same uncertain American slang origins as the base word.
English spelling rules mean that verbs ending in 'y' preceded by a consonant change to 'ies' in third person (gussy→gussies), the same rule that gives us 'carries,' 'worries,' and 'hurries.'
Complete word intelligence in one call. Free tier — 50 lookups/day.