'randomly-decorated' originates from the combination of 'randomly' and 'decorated'. 'Randomly' comes from 'random', which originates from Old French 'randir', meaning 'to gallop', and 'decorated' comes from Latin 'decoratus', the past participle of 'decorare', meaning 'to adorn'.

'randomly' evolved from the Old French 'randir', and 'decorated' from the Latin 'decoratus', eventually forming the modern English term 'randomly-decorated'.

Initially, 'randomly' meant 'without a specific pattern', and 'decorated' meant 'adorned'. Together, they describe something adorned without a specific pattern.