This thread feels like going down the rabbit hole.
The etymology of interpolate is as follows:
1610s, "to alter or enlarge (a writing) by inserting new material,"
from Latin "interpolatus" past participle of interpolare "alter, freshen up, polish;" of writing, "falsify,"
from inter- "up" + polare, related to polire "to smoothe, polish."
Sense evolved in Latin from "refurbish," to "alter appearance of," to "falsify" (especially by adding new material).
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