'infrequently-linked' originates from the combination of 'infrequent' and 'link', where 'infrequent' means 'not occurring often' and 'link' means 'to connect or associate'.

'infrequent' changed from the Latin word 'infrequens' and 'link' from the Old English 'hlencan', eventually forming the modern English term 'infrequently-linked'.

Initially, 'infrequent' meant 'not crowded' and 'link' meant 'to bind', but over time they evolved into their current meanings of 'not often' and 'to connect', respectively.