'spiky-headed' originates from the combination of 'spiky' and 'headed', where 'spiky' refers to something having sharp points and 'headed' refers to having a particular type of head or hairstyle.

'spiky' changed from the Old English word 'spic' meaning 'point' and eventually became the modern English word 'spiky'.

Initially, 'spiky' meant 'having sharp points', but over time it evolved to describe hairstyles that stand up in spikes.