untrill

English

Etymology

un- +‎ trill

Verb

untrill (third-person singular simple present untrills, present participle untrilling, simple past and past participle untrilled)

1. (transitive, phonetics) To remove the trill from.
   • 1994, Dugald Stewart, Comparativist Controversies, volumes 1-2, page 28:

     Even in such a language as German some one must have begun to make his [r] into a back sound, and to untrill it, and it was only gradually that the change spread through whole communities.