steepen
过去式：steepened
过去分词：steepened
现在进行时：steepening
词形变化：
动词过去式: steepened | 动词过去分词: steepened | 动词现在分词: steepening | 动词第三人称单数: steepens |
同义词：
precipitous | soak | drench | sheer | immerse | vertical | sharp | unreasonable | expensive | extreme | excessive | infuse | submerge | suffuse | imbue | permeate | high | saturate | sop | bathe | abrupt | usurious | absorb | soak up | plunge | outrageous | exorbitant | extortionate | unconscionable | engross | engulf |
反义词：