Adjective

(er)

Dizzy, feeling dizzy or unsteady and as if about to fall down.

The man became giddy upon standing up so fast.

Causing dizziness: causing dizziness or a feeling of unsteadiness.

They climbed to a giddy height.

Lightheartedly silly, or joyfully elated.

* {{quote-book, year=1905, author=

, title= , chapter=2 citation , passage=Miss Phyllis Morgan, as the hapless heroine dressed in the shabbiest of clothes, appears in the midst of a gay and giddy throng; she apostrophises all and sundry there, including the villain, and has a magnificent scene which always brings down the house, and nightly adds to her histrionic laurels.}}

The boy was giddy when he opened his birthday presents.

(archaic) Frivolous, impulsive, inconsistent, changeable.

* 1599 ,

In brief, since I do purpose to marry, I will think nothing to any purpose that the world can say against it; and therefore never flout at me for what I have said against it, for man is a giddy thing, and this is my conclusion.

* 1784 , , Tirocinium; or, A Review of Schools

Young heads are giddy and young hearts are warm,

And make mistakes for manhood to reform.

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.