simple past tense and past participle of overstand.
verb (used without object), o·ver·stood, o·ver·stand·ing. Nautical.
Origin of overstand
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for overstood
Historical Examples of overstood
Doubtless he found, when he discovered George had gone, that he had "overstood the market."The Underground Railroad
Online Etymology Dictionary, © 2010 Douglas Harper