Adjective

(en-adj)

Having, or capable of exerting power, potency or influence.

* (William Shakespeare)

The powerful grace that lies / In herbs, plants, stones, and their true qualities.

*{{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=19 citation , passage=As soon as Julia returned with a constable, Timothy, who was on the point of exhaustion, prepared to give over to him gratefully. The newcomer turned out to be a powerful youngster, fully trained and eager to help, and he stripped off his tunic at once.}}

(mining) Large; capacious; said of veins of ore.

Adjective

(en adjective)

Stiff, rather than flexible.

Fixed, rather than moving.

* 2011 ,David Foster Wallace, The Pale King ,Penguin Books, page 5:

A sunflower, four more, one bowed, and horses in the distance standing rigid and still as toys.

Rigorous and unbending.

Uncompromising.