Adjective

(en adjective)

Full of zeal; ardent, fervent; exhibiting enthusiasm or strong passion.

* 1791 , , volume 1, page 238:

Johnson was truly zealous for the success of "The Adventurer;" and very soon after his engaging in it, he wrote the following letter:

* 1896 , , A History of the Warfare of Science with Theology in Christendom (2004 edition), page 122:

Doubtless many will exclaim against the Roman Catholic Church for this; but the simple truth is that Protestantism was no less zealous against the new scientific doctrine.

* 1940 , Foster Rhea Dulles, America Learns to Play: A history of popular recreation, 1607-1940 , page 61:

and there were few more zealous dancers at the fashionable balls in the Raleigh Tavern at Williamsburg.

* 2011 April 4, " Newt Gingrich," Time (retrieved 9 Sept 2013):

Newt Gingrich . . . left Congress in 1998, following GOP midterm-election losses that many blamed on his zealous pursuit of Bill Clinton's impeachment.

Adjective

(er)

Insane; lunatic; demented.

* 1663 , (Samuel Butler), (Hudibras)

Over moist and crazy brains.

* , chapter=5

, title= Mr. Pratt's Patients , passage=Of all the queer collections of humans outside of a crazy asylum, it seemed to me this sanitarium was the cup winner. […] When you're well enough off so's you don't have to fret about anything but your heft or your diseases you begin to get queer, I suppose.}}

Out of control.

Overly excited or enthusiastic.

* R. B. Kimball

The girls were crazy to be introduced to him.

In love; experiencing romantic feelings.

(informal) Unexpected; surprising.

Characterized by weakness or feebleness; decrepit; broken; falling to decay; shaky; unsafe.

* Macaulay

Piles of mean and crazy houses.

* Addison

One of great riches, but a crazy constitution.

* Jeffrey

They got a crazy boat to carry them to the island.