'infrequently-updated' is a compound word formed from 'infrequently' and 'updated'. 'Infrequently' originates from Latin, specifically the word 'infrequens', where 'in-' meant 'not' and 'frequens' meant 'frequent'. 'Updated' comes from the Latin 'up' meaning 'up' and 'date' meaning 'to give a date'.

'Infrequently' changed from the Latin word 'infrequens' and eventually became the modern English word 'infrequent'. 'Updated' evolved from the Latin 'up' and 'date' through Middle English.

Initially, 'infrequent' meant 'not frequent', and 'update' meant 'to bring up to date'. The compound 'infrequently-updated' retains these meanings in modern usage.