1.
[syn: unbridled, unchecked, uncurbed, ungoverned]
The Collaborative International Dictionary of English v.0.48:
Unbridled \Un*bri"dled\, a. [Pref. un- not + bridled.]
Loosed from the bridle, or as from the bridle; hence,
unrestrained; licentious; violent; as, unbridled passions.
"Unbridled boldness." --B. Jonson.
[1913 Webster]
Lands deluged by unbridled floods. --Wordsworth.
[1913 Webster] -- Un*bri"dled*ness, n. --Abp. Leighton.
[1913 Webster]
WordNet (r) 3.0 (2006):
unbridled
adj 1: not restrained or controlled; "unbridled rage"; "an
unchecked temper"; "ungoverned rage" [syn: unbridled,
unchecked, uncurbed, ungoverned]