'baggier' originates from English, specifically the adjective 'baggy', where 'bag' meant 'a sack or pouch' and the suffix '-y' formed adjectives meaning 'characterized by'.

'baggy' changed from Middle English forms related to 'bag' (from words like 'bagge'), ultimately tracing back to Old Norse 'baggi' meaning 'bundle' or 'pack', and later formed the adjective 'baggy' in modern English; 'baggier' is the comparative formed from that adjective.

Initially associated with a 'sack' or 'pouch' (a physical container), the sense shifted to describe the loose, sack-like shape of clothing; 'baggier' now means 'more loose-fitting' compared with something else.