'randomly-done' originates from the combination of 'randomly' and 'done', where 'randomly' is derived from 'random', meaning 'without a definite aim, direction, rule, or method', and 'done' is the past participle of 'do', meaning 'to perform or execute'.

'randomly' evolved from the Middle English 'randoun', meaning 'impetuous headlong rush', and 'done' from the Old English 'don', meaning 'to perform'.

Initially, 'randomly' meant 'impetuous or headlong', but over time it evolved to mean 'without a specific plan or pattern'.