D defs.my
Entry 1 sense Webster, 1913

Unbridled

/ən-brīd'-əld/ · Un·bri·dled · IPA /ənbrˈaɪdəld/
01 a. Loosed from the bridle, or as from the bridle; hence, unrestrained; licentious; violent; as, unbridled passions.
  1. 1.
    Loosed from the bridle, or as from the bridle; hence, unrestrained; licentious; violent; as, unbridled passions.
    “Lands deluged by unbridled floods.” Wordsworth.