Defined as ones ability to control his or her fingers on a mobile devicekeyboard. One who makes multiple typos is said to have poor manual textdarity.
Cal's texts are as hard to understand as when he's on the phone talkin to you. I used to think he was an illiterate, but maybe he has bad manual textdarity, from his arthrytis.
How dare you have the testacity to talk to my girlfriend in front of me!?
I hate him so much! What testacity!
The testacity that was just seen was unbelievable.
Derek, don't come at me with your testacity!
The testacity! The testacity!