tithing

The story

1. Old English · inherited fromtēoþung
2. Middle English · inherited fromtithynge
3. English todaytithing

From Middle English tithynge, from Old English tēoþung or tēoðung, from tēoða (“a tithe”) + -ing (suffix forming patronymics and diminutives) and tēoþian (“to tithe”) + -ung (suffix forming verbal nouns). Equivalent to tithe + -ing.