Middle English word mynen comes from Proto-Indo-European *mnā-, and later Proto-Germanic *munaną (To remember. To think, to consider, to believe.)

Detailed word origin of mynen

Dictionary entry	Language	Definition
*mnā-	Proto-Indo-European (ine-pro)
*munaną	Proto-Germanic (gem-pro)	To remember. To think, to consider, to believe.
muna	Old Norse (non)	To remember.
ġemynan	Old English (ang)
munan	Old English (ang)
minen	Middle English (enm)

Words with the same origin as mynen