1. A genuine medical condition, caused by a variety of conditions including PTSD, "keypad phobia" and tennis elbow, which result in the sufferer being unable to type correctly.
2. Contrary to popular belief symptoms do not include having fingers so fat you're unable to type correctly.
Commonly abbreviated to ffs.
1. "Almost all of my tweets have typos because of FFS (Fat Finger Syndrome)"
2. "That should say peal not peak. Fat fingers syndrome! Rolling on the floorlaughing"
3. "For* and not f4ir... fat fingers syndrome lol"
To press another button accidentally, while pressing numbers or letters that you meant to, resulting in an incorrect extra number/letter. Such as when typing something, or dialing a phone number.
Pressing the keys on a cell phone, radio, or computer keyboard and getting improper results because your fingers have hit more than one key at a time. A common problem for those of us with pudgy fingers.
I can't use that cell phone. I keep on fat-fingering the buttons, and I keep on getting wrong numbers!