Adjective

(en adjective)

hideous or frightful

* Shakespeare

So bad a death argues a monstrous life.

enormously large

a monstrous height

a monstrous ox

freakish or grotesque

* John Locke

a monstrous birth

* Jeremy Taylor

He, therefore, that refuses to do good to them whom he is bound to love is unnatural and monstrous in his affections.

of, or relating to a mythical monster; full of monsters

* Milton

Where thou, perhaps, under the whelming tide / Visitest the bottom of the monstrous world.

(obsolete) marvellous; strange

Adjective

(en adjective)

Not ordinary; exceptional; unusual;

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* {{quote-news, year=2011, date=October 23, author=Tom Fordyce, work=BBC Sport

, title= 2011 Rugby World Cup final: New Zealand 8-7 France , passage=Tony Woodcock's early try and a penalty from fourth-choice fly-half Stephen Donald were enough to see the All Blacks home in an extraordinary match that defied all pre-match predictions.}}

* {{quote-magazine, date=2013-06-08, volume=407, issue=8839, page=52, magazine=(The Economist)

, title= The new masters and commanders , passage=From the ground, Colombo’s port does not look like much.

Remarkably good.