Etymograph > Indo-European > Old English > Rules > oe-voicing-assimilation

• d > t if next sound is voiceless obstruent or previous sound is voiceless obstruent

Examples

From	To	Gloss	Steps	Expected
PNWGmc *kussidē	cyste	(s)he kissed	kussidē > kysdē > kystē > cyste
*milds	milts	mildness	milds > milts
PGmc *adesan-	adesa	adze	adesan- > ædsan > ætsan	ætsan
PGmc *ahtudan-	eahtoða	eighth	ahtudan- > eahtdan > eahttan	eahttan
PGmc *skradtan-	sċrætte	demon	skradtan- > sċrædtan > sċrættan	sċrættan

• þ > s / _s

Examples

From	To	Gloss	Steps
PWGmc *blīþisi	bliss	happiness	blīþisi > blīþsi > blīssi > bliss

• þ > t / {s|t}_

Examples

From	To	Gloss	Steps	Expected
PWGmc *wlātiþō	wlǣtta	nausea, disgust, loathing	wlātiþō > wlǣtþā > wlǣttā > wlætta	wlætta

Sequences

pwgmc-to-oe: previous oe-degemination-before-consonant, next oe-shortening-before-consonants
pgmc-to-oe: previous oe-degemination-before-consonant, next oe-shortening-before-consonants
pnwgmc-to-oe: previous oe-degemination-before-consonant, next oe-shortening-before-consonants