'irregularly-updated' originates from the combination of 'irregularly' and 'updated', where 'irregularly' comes from Latin 'irregularis', meaning 'not regular', and 'updated' is derived from 'update', meaning 'to bring up to date'.

'irregularly' changed from the Latin word 'irregularis' and eventually became the modern English word 'irregularly'. 'Updated' evolved from the verb 'update', which was formed in the 20th century.

Initially, 'irregularly' meant 'not regular', and 'updated' meant 'brought up to date'. The combined term 'irregularly-updated' retains these meanings, indicating something updated without a regular schedule.