'seldom-voiced' originates from the combination of 'seldom,' meaning 'rarely,' and 'voiced,' meaning 'expressed or spoken.'

'seldom' comes from Old English 'seldan,' and 'voiced' is derived from the Latin 'vocem,' meaning 'voice.'

Initially, 'seldom' meant 'rarely' and 'voiced' meant 'spoken,' and this meaning has largely remained the same in modern usage.