Rampant synonyms such as rearing, epidemic, fanatical, exuberant, erect, and perpendicular. Rampant is an adjective, and its antonyms are controlled and under control. Additionally, here are 41 synonyms, related words, and verbs for rampant.
epidemic, out of control, out of hand, pandemic, pervasive, rife, spreading like wildfire, unbridled, unchecked, uncontrolled, unrestrained, and widespread.
exuberant, jungly, lavish, lush, luxuriant, productive, profuse, rank, rich, riotous, and vigorous.
erect, on end, perpendicular, rearing, standing (up), upended, upright, and vertical.