misthink

[ mis-thingk ]
/ mɪsˈθɪŋk /
Archaic.

verb (used without object), mis·thought, mis·think·ing.

to think incorrectly or unfavorably.

verb (used with object), mis·thought, mis·think·ing.

to think unfavorably or ill of.

Origin of misthink

First recorded in 1175–1225, misthink is from the Middle English word misthenken. See mis-1, think1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019