1. Pride is the mask of one’s own faults. 

2. The gunman, whose mask had slipped, fled.

3. They contrived a mask against poison gas.

4. He conceals his worries behind a mask of nonchalance.

5. He patched together a mask for the fancy party.

6. Doctors working in an operating theatre have to mask their noses and mouths with a specially clean cloth.

7. Her sociable manner is really a mask for a very shy nature.

8. This perfume won't mask the unpleasant smell.

9. She whipped the mask off her face.

10. Liz turned on a radio to mask the noise.

11. Maggie's face had frozen into a cold mask.

11. Sentencedict.com is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

12. She wore a mask over her face.

13. Our oatmeal face mask absorbs impurities from your skin.

14. She ripped off the mask of the hypocrite mercilessly.

15. She had used make-up skilfully to mask the bruise.

16. Two eyes glared at him beneath the mask.

17. The mask was so lifelike it was quite frightening.

18. The mask was coated in gold leaf.

19. I surprised everyone by wearing a terrible mask.

20. Her face was a cold blank mask.

21. The mask fitted tightly over his face.

22. You'll frighten the baby wearing that mask.

23. This mask leaves your complexion feeling soft and supple.

24. Her sarcasm is a mask for her insecurity.

25. Dena lit a cigarette, trying to mask her agitation.

26. Air-fresheners mask bad smells instead of removing them.

27. Men often mask their true feelings with humour.

28. He longed to throw off the mask of respectability.

29. The newspaper revealed the sordid truth behind his mask of respectability.

30. He managed to acquire a thin veneer of knowledge to mask his real ignorance.