Adjective

(en adjective)

Inactive, at rest, quiet.

The bats were quiescent at that time of day, so we slowly entered the cave.

* Professor Wilson

In times of national security, the feeling of patriotism is so quiescent that it seems hardly to exist.

(grammar) Not sounded; silent.

The k is quiescent in "knight" and "know".

Adjective

(en adjective)

Lying on its back, reclined

* {{quote-news

, year=2011 , date=December 15 , author=Felicity Cloake , title=How to cook the perfect nut roast , work=Guardian citation , page= , passage=Christmas queen Mary Berry's aubergine five-nut roast, from her Christmas Collection, is, as the name suggests, rather more focused on the nut side of things. Breadcrumbs play second fiddle to a medley of almonds, Brazils, chestnuts, pine nuts and pistachios which, although tangy with lemon juice and garlic, is outrageously dense. A single slice of this could leave you supine in front of the Queen's speech without even the wherewithal to reach for the remote control.}}

Leaning backward, or inclining with exposure to the sun; sloping; inclined.

* Dryden

If the vine / On rising ground be placed, or hills supine .

Negligent; heedless; listless; lethargic; indifferent.

* Woodward

He became pusillanimous and supine , and openly exposed to any temptation.

*

Passive

* 1748 , , Enquiries concerning the human understanding and concerning the principles of moral , London: Oxford University Press: 1973, page 34,

Nothing, therefore, can be more contrary than such a philosophy to the supine indolence of the mind.