'irregularly-presented' originates from the combination of 'irregularly' and 'presented'. 'Irregularly' comes from the Latin 'irregularis', meaning 'not regular', and 'presented' is derived from the Latin 'praesentare', meaning 'to place before'.

'Irregularly' evolved from the Latin 'irregularis' through Old French 'irregulier', and 'presented' evolved from the Latin 'praesentare' through Old French 'presenter'.

Initially, 'irregularly' meant 'not conforming to rule', and 'presented' meant 'to place before'. Over time, 'irregularly-presented' came to mean 'displayed in a non-consistent manner'.