1. 掩饰(真实意图或情感)
When people dissemble, they hide their real intentions or emotions.

1. make believe with the intent to deceive

e.g. He feigned that he was ill
He shammed a headache

Synonym: feignshampretendaffect

2. behave unnaturally or affectedly

e.g. She's just acting

Synonym: pretendact

3. hide under a false appearance

e.g. He masked his disappointment

Synonym: cloakmask