run rampant

: to go faster than a walk

: to move at a fast gallop

: flee, retreat, escape

: 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

: standing on one hind foot with one foreleg raised above the other and the head in profile

: marked by a menacing wildness, extravagance, or absence of restraint