the word 'twaddle' emerged in the late 18th century as a variant or alteration of the earlier english dialect word 'twattle', which carried the same meaning of foolish talk. both 'twattle' and 'twaddle' are considered echoic or onomatopoeic in origin, formed to mimic the sound or rhythm of trivial, incessant, or meaningless speech. this process of creating words that phonetically imitate the concept they describe is common across languages. the term has retained its core sense of silly or worthless discourse from its inception to modern usage, often carrying a dismissive or contemptuous tone.

the word is a simplex. it is an onomatopoeic or echoic formation, likely imitative of idle or foolish chatter.