1) Intemperate 2) Loose 3) Unchecked 4) Uncurbed 5) Ungoverned 6) Unimpeded 7) Unlicensed 8) Unrestrained 1) Not fitted with a bridle 2) Not restrained or controlled 3) Unchecked 4) Uncurbed 5) Ungoverned 6) Unrestrained 7) Without restraint 
• (a.) Loosed from the bridle, or as from the bridle; hence, unrestrained; licentious; violent; as, unbridled passions.
[adj] - not restrained or controlled
unchecked adjective not restrained or controlled; `unbridled rage`; `an unchecked temper`; `ungoverned rage`
not controlled or restrained: unbridled enthusiasm. · not fitted with a bridle.
[SAT terms] not restrained or controlled not restrained or controlled