“掩饰的”的英语可以翻译为：palliative ...

那位女士一脸毫不掩饰的憎恨让我震惊。The naked hatred in the woman's face shocked me.不加掩饰的仰慕神情a look of undisguised admiration几乎不加掩饰的威胁a thinly veiled threat...