run rampant
Definition of run rampant
: to be very common or to spread very quickly and in a way that is difficult to control Rumors of her engagement ran rampant.
From the M-W Editors
Word by Word Definitions
: to go faster than a walk
: to go steadily by springing steps so that both feet leave the ground for an instant in each step
: to move at a fast gallop
: an act or the action of running : continued rapid movement
: a quickened gallop
: a migration of fish (as up or down a river) especially to spawn
: being in a melted state
: made from molten material : cast in a mold
: having made a migration or spawning run
: rearing upon the hind legs with forelegs extended
: marked by a menacing wildness, extravagance, or absence of restraint
: profusely widespread
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