'antenna-less' originates from the English word 'antenna' combined with the suffix '-less', where 'antenna' refers to a device for receiving or transmitting signals, and '-less' means 'without'.

'antenna' changed from the Latin word 'antenna', meaning 'sail yard', and eventually became the modern English word 'antenna'.

Initially, 'antenna' referred to a 'sail yard', but over time it evolved into its current meaning of 'a device for receiving or transmitting signals'.