Middle and Old English had two sounds for "
th", the "
eth" as "
ð" and the "
thorn" as "
þ". The distinct "
thorn" and "
eth" sounds eventually merged. The thorn as "
the" looked like and was the source of "
ye" for "
the".
French monks (after the Norman conquest of Britain from France) substituted the Latin diphthong "
th" for the sound.
What do devout monks say before fumigating the monastery?
Let us spray.