'irregularly-banned' originates from the combination of 'irregularly' and 'banned'. 'Irregularly' comes from Latin 'irregularis', meaning 'not regular', and 'banned' comes from Old English 'bannan', meaning 'to summon or proclaim'.

'Irregularly' evolved from the Latin 'irregularis' through Old French 'irregulier', and 'banned' evolved from Old English 'bannan' to Middle English 'ban', eventually forming the modern English 'banned'.

Initially, 'irregularly' meant 'not following a regular pattern', and 'banned' meant 'to proclaim or summon'. Over time, 'banned' evolved to mean 'prohibited', and 'irregularly-banned' now means 'prohibited in an inconsistent manner'.