hefty

Etymology

19th century. From heft (“weight”) + -y. The similarity with German heftig (“vigorous, violent, intense”) is apparently coincidental. From the German are Dutch, Danish, Norwegian heftig, Swedish häftig.

adj

1. Heavy, strong, vigorous, mighty, impressive.
   He can throw a hefty punch.
   The Remove dormitory echoed to the old, familiar sound of Bunter's hefty snore. 1934, Frank Richards, The Magnet, Kidnapped from the Air
2. Strong; bulky.
   They use some hefty bolts to hold up road signs.
3. (of a person) Possessing physical strength and weight; rugged and powerful; powerfully or heavily built.
   He was a tall, hefty man.
4. Heavy, weighing a lot.
   She carries a hefty backpack full of books.
5. (colloquial, of a number or amount) Large.
   That's going to cost you a hefty sum.
   a hefty fine