'fun-related' originates from the English word 'fun' combined with the suffix '-related', where 'fun' meant 'enjoyment or amusement' and '-related' indicates a connection or association.

'fun' changed from the Middle English word 'fon' meaning 'foolish or silly behavior' and eventually became the modern English word 'fun' with a positive connotation of enjoyment.

Initially, 'fun' meant 'foolish or silly behavior', but over time it evolved into its current meaning of 'enjoyment or amusement'.