Adjective

(en-adj)

Very large or wide (literally or figuratively).

The Sahara desert is vast .

There is a vast difference between them.

Very great in size, amount, degree, intensity, or especially extent.

* {{quote-magazine, year=2012, month=March-April

, author=Anna Lena Phillips , title=Sneaky Silk Moths , volume=100, issue=2, page=172 , magazine=(American Scientist) citation , passage=Last spring, the periodical cicadas emerged across eastern North America. Their vast numbers and short above-ground life spans inspired awe and irritation in humans—and made for good meals for birds and small mammals.}}

(obsolete) Waste; desert; desolate; lonely.

* William Shakespeare, the Life and Death of Richard the Third Act I, scene IV:

the empty, vast , and wandering air

Adjective

(en-adj)

Strained; tightly drawn.

Strict, very close or earnest.

Extreme in degree; excessive.

Extreme in size or strength.

* {{quote-magazine, date=2013-06-29, volume=407, issue=8842, page=28, magazine=(The Economist)

, title= High and wet , passage=Floods in northern India, mostly in the small state of Uttarakhand, have wrought disaster on an enormous scale. The early, intense onset of the monsoon on June 14th swelled rivers, washing away roads, bridges, hotels and even whole villages.}}

Stressful and tiring.

Very severe.