I. ˈmī-tē adjective
( might·i·er ; -est )
Date: before 12th century
1. : possessing might : powerful
2. : accomplished or characterized by might
a mighty thrust
3. : great or imposing in size or extent : extraordinary
II. adverb
Date: 14th century
: extremely , very
a mighty handy gadget
Usage:
Mighty used as an intensive usually conveys a folksy down-home feeling
plain and simple fare…but mighty filling and mighty satisfying — Asheville ( N.C. ) Citizen-Times
It is used especially to create a chatty style
turnip greens, corn bread and biscuits. That sounds mighty good to me — Julia Child
or to stress a rural atmosphere
a man must be mighty serious about his squirrel hunting — Stuart Williams, Field & Stream
In a more formal context, mighty is used to create emphasis by drawing attention to itself
the chairman made sure that there were mighty few of them — Mollie Panter-Downes