'infrequently-shown' originates from the combination of 'infrequent' and 'shown', where 'infrequent' means 'not occurring often' and 'shown' is the past participle of 'show', meaning 'to display'.

'infrequent' changed from the Latin word 'infrequens', and 'shown' is derived from the Old English 'sceawian', eventually becoming the modern English word 'shown'.

Initially, 'infrequent' meant 'not crowded', but over time it evolved into its current meaning of 'not occurring often'.