shrill

The story

1. Old English · inherited fromsċill“sonorous sounding”
2. Middle English · inherited fromschrille
3. English todayshrill

From Late Middle English schrille, shirle, shrille (“of a sound: high-pitched, piercing; producing such a sound”), possibly from the earlier shil, schille (“loud, resounding; high-pitched”), from Old English sċill (“sonorous sounding”), of Germanic origin and probably ultimately imitative. The r in the word was introduced by analogy to Middle English skrīke, skrīken, scrēmen, possibly to avoid confusion with non-Anglian forms of schelle (modern English shell) where Old English sċill (“sonorous sounding”) and sċill (“shell”) existed. The word is cognate with Icelandic skella (“crash, bang, slam”), Low German schrell (“sharp in taste or tone”).