dissimulate

1. V-T/V-I When people dissimulate, they hide their true feelings, intentions, or nature. 掩饰(真实的情感、意图或本性)[正式]

This man was too injured to dissimulate well. 这个男人伤得太重，不可能掩盖得住。

He didn't attempt to dissimulate or conceal his true feelings. 他没有尝试着掩饰或隐瞒自己的感受。