掩饰 (yǎn shì): เพื่อปกปิด

He failed the exam, but he covered up his score from his parents, falsely claiming he got a high score.

She forced a smile to cover up her inner sadness, but her swollen eyes betrayed her.

The company tried to cover up its financial problems, but the audit report eventually revealed the truth.

He kept touching his nose while speaking; this gesture couldn't cover up his nervousness.