'seldom-sent' originates from the combination of 'seldom,' meaning 'rarely,' and 'sent,' the past participle of 'send.'

The term 'seldom-sent' combines the Old English 'seldan' (meaning 'rarely') with the past participle 'sent' from the verb 'send.'

Initially, it meant 'rarely dispatched,' and this meaning has largely remained the same in modern usage.