adj. 25B6; adjective
rampant inflation : UNCONTROLLED, unrestrained, unchecked, unbridled, widespread; out of control, out of hand, rife.
rampant dislike : VEHEMENT, strong, violent, forceful, intense, passionate, fanatical.
rampant vegetation : LUXURIANT, exuberant, lush, rich, riotous, rank, profuse, vigorous; informal jungly.
(Heraldry) a lion rampant : UPRIGHT, erect, standing (up), rearing up.
controlled, mild.