'carelessly-gathered' originates from the combination of 'carelessly' and 'gathered', where 'carelessly' is derived from 'careless', meaning 'without care', and 'gathered' is the past participle of 'gather', meaning 'to collect'.

'carelessly' evolved from Middle English 'carles', and 'gathered' from Old English 'gadrian', eventually forming the modern English compound adjective 'carelessly-gathered'.

Initially, 'carelessly' meant 'without care or attention', and 'gathered' meant 'collected'. The compound adjective retains these meanings, emphasizing a lack of precision in collection.