mis- /mɪs/ BrE AmE prefix
[ Origin: Partly from Old English mis- , partly from Old French mes- ]
1 . bad or badly:
misfortune (=bad luck)
He’s been misbehaving.
2 . wrong or wrongly:
a miscalculation
I misunderstood you.
3 . used to refer to an opposite or the lack of something:
What caused this anger and mistrust (=lack of trust) ?