English

insonorous

From in- + sonorous.

Proto-Indo-European *h₁én ‘in’

Proto-Germanic *in ‘into’

English in-

Proto-Indo-European *swenh₂- ‘to sound, resound’

…

Proto-Italic *swonaō ‘to sound, resound’

Latin sonō ‘to make a noise, to resound’

Latin sonor ‘sound’

Latin sonōrus ‘sounding, resounding’

Today it means

adj Not clear or melodious.

Language periods are conventional ranges, not dates for this word.

Etymograph / insonorous