'twangy' originates from the word 'twang', which is believed to have originated from the Middle English word 'twangen', meaning 'to make a sharp sound'.

'twangen' transformed into the modern English word 'twang', and eventually became 'twangy' to describe something having the quality of a twang.

Initially, it meant 'to make a sharp sound', but over time it evolved into its current meaning of 'having a sharp, nasal, or resonant sound'.