A text message containing information (usually unflattering or damaging) about a third party which is sent to the individual it concerns rather than the person for whom the communication is intended.
Text written for secret lover is inadvertently sent to partner, making it a mistext:

"On my way home, partner name suspicious, don't call."

by Dr E Short July 2, 2008
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1. When a text message is taken out of context due to lack of tone in dialog.

2. When you send a text message to the wrong contact.
Due to a mistextication, my girlfriend Sarah found out about my plans with her friend Shawna.
by Steve Isidor July 22, 2008
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