a tenth part (originally of produce) due as support of the clergy, c. 1200, from Old English teogoþa (Anglian), teoþa (West Saxon) "tenth," from Proto-Germanic *tegunthan, from PIE *dekmto-, from PIE root *dekm- "ten." Retained in ecclesiastical sense while the form was replaced in ordinal use by tenth.
tithe (v.)
Old English teoþian "to pay one-tenth," from the root of tithe (n.). As "to impose a payment of a tenth," late 14c. Related: Tithed; tithing.
The church was tithed
The wool was tithed
He tithed his income to the Church
Although she left the church officially, she still tithes
tit
tit for tat
titan
titanic
titanium
tithe
tither
titi
Titian
titillate
titillation