'irregularly-displayed' originates from the combination of 'irregularly' and 'displayed', where 'irregularly' comes from Latin 'irregularis', meaning 'not regular', and 'displayed' from Old French 'despleier', meaning 'to unfold'.

'irregularly-displayed' evolved from the combination of 'irregularly' and 'displayed', which were used separately in Middle English and eventually combined in modern English.

Initially, 'irregularly' meant 'not regular', and 'displayed' meant 'unfolded or shown'. Over time, the combination came to mean 'shown in a non-consistent manner'.