'vibrational' originates from English, specifically the word 'vibration', where the Latin root 'vibrare' meant 'to shake' or 'to move rapidly to and fro'.

'vibration' came into English via Latin 'vibrationem' (from 'vibrare'); the adjective 'vibrational' was formed in English by adding the suffix '-al' to 'vibration'.

Initially associated with the Latin sense of 'to shake', the word evolved into the noun 'vibration' meaning 'a shaking or oscillation' and then into the adjective 'vibrational' meaning 'relating to such oscillations' (including extended metaphorical senses).