You

2nd person pronoun
Current spelling dates to the 1600s, and was equivalent to entry 1.

List of old spellings and equivalent words:

1. Ye (Formal, 1700s and prior)
2. Thee (Informal subject form, 1700s and prior)
3. Thou (Informal object form, 1700s and prior)
4. Yow (Scottish, 1300s-1500s)