**Here are 10 examples of using the word «redden» in English:**
1. The sun began to redden the sky as the day drew to a close.
2. She felt her face redden with embarrassment when she realized she had said something inappropriate.
3. The intense heat of the fire began to redden the metal of the pot.
4. He could feel his cheeks redden as he spoke to his crush.
5. The irritation on his skin began to redden and swell after applying the new skincare product.
6. The blush on her cheeks reddened as she spoke about her favorite hobby.
7. The sky began to redden in the east, signaling the arrival of dawn.
8. The cold wind began to redden his nose and cheeks as he walked home from school.
9. The anger began to redden his face as he argued with his colleague.
10. The berries on the bush began to redden, signaling that they were ripe and ready to be picked.