overflown

English

Etymology 1

From over- +‎ flown.

Verb

overflown

1. past participle of overfly

Etymology 2

From Middle English overflowen (past participle of overflowen besides rare overflowed), from Old English oferflōwen (past participle of oferflōwan).

Verb

overflown

1. (US, proscribed) past participle of overflow

Usage notes

The use of the past participle overflown for overflow sometimes occurs in American English, where it is often proscribed and seen as resulting from a confusion of overflow and overfly. However, it was once more prevalent throughout the English-speaking world, and is ultimately the original form.