'hornless' originates from the Old English word 'horn,' meaning 'a hard, pointed, often curved part growing from the head of certain animals,' combined with the suffix '-less,' indicating absence.

'horn' changed from the Old English word 'horn' and eventually became the modern English word 'hornless' with the addition of the suffix '-less.'

Initially, it meant 'without a horn,' and this meaning has largely remained the same in modern usage.