unbridled nationalism is a menace; it leads to trade wars and, all too often, real wars.
The fear of unbridled ambition is nothing new in American politics.
New studies show that unbridled hateful speech can cause emotional harm.
You hate them for having so much fun—damn that unbridled, financially secure joy!
But more than anything else, the night was about pure, unbridled dancing.
Instead of a hypocritical submission, it was dominated by the fury of unbridled passion.
He did not say a word, knowing my unbridled desire to meet danger.
For seven days, nought but unbridled gayety prevailed in Siegmund's halls.
They were sufficient proofs of his capacity for unbridled rage.
The multitude, "unbridled and heedless," pulled this way and that.
late 14c., originally in figurative sense of "unrestrained, ungoverned," from un- (1) "not" + bridled (see bridle (v.)). Cf. Middle Dutch ongebreidelt. Literal sense of "not fitted with a bridle" (of horses) is not recorded before 1550s. The verb unbridle is attested from c.1400 in the literal sense; mid-15c. in the figurative sense.