Where does “that're” come from?
that're (English) comes from English ’re, from English are, from Middle English aren, from Old English earon, from Old English bēon, from Proto-Germanic bijōniz, from Proto-Germanic bijǭ, from Proto-Indo-European bʰey- — bee.
Ancestry of “that're”, step by step
that're traces back through two separate lines of ancestry.
via English ’re
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | ’re | inflection of the verb "to be" |
| 2 | English | are | second-person singular simple present of be;... |
| 3 | Middle English | aren | Plural present indicative form of been |
| 4 | Old English | earon | third-person plural simple present of wesan |
| 5 | Old English | bēon | to be, become |
| 6 | Proto-Germanic | bijōniz | — |
| 7 | Proto-Germanic | bijǭ | bee |
| 8 | Proto-Indo-European | bʰey- | bee |
via English þat
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | þat | so, so that, in order that |
| 2 | Middle English | þat | Alternative form of that |
| 3 | Old English | þæt | nominative/accusative neuter singular of se: the;... |
| 4 | Proto-Germanic | þat | nominative/accusative singular neuter of *sa |
| 5 | Proto-Indo-European | tód | demonstrative pronoun; that; it |
| 6 | Proto-Indo-European | to- | it; that; the, that |
| 7 | Proto-Indo-European | só | this; that |