Etymograph > Indo-European > Old English

ū, ú

Classes: long close back vocalic vowel
Implicit classes: V
Features: +long +high -low +back +syllabic +voice

Related rules

Origin

post-pwgmc-monosyllabic-z: aiz > ā / C_, iz > ē / C_, uz > ū / C_

oe-i-umlaut: {u|ū|o|ō|æ|ā} > {y|ȳ|e|ē|e|ǣ}

pnwgmc-word-final-long-o: ō > ū / _#

pwgmc-jj-ww: uww > ūw / _!j, ww > uw / _!j, j > i / _j