redden
verb /ˈredn/
  /ˈredn/
[intransitive, transitive]Verb Forms
| present simple I / you / we / they redden |    /ˈredn/   /ˈredn/  | 
| he / she / it reddens |    /ˈrednz/   /ˈrednz/  | 
| past simple reddened |    /ˈrednd/   /ˈrednd/  | 
| past participle reddened |    /ˈrednd/   /ˈrednd/  | 
| -ing form reddening |    /ˈrednɪŋ/   /ˈrednɪŋ/  | 
- to become red; to make something red
- The sky was reddening.
 - He stared at her and she reddened.
 - redden with something He could feel his face reddening with embarrassment.
 - be reddened by something Her arms had been reddened by the sun.
 
Extra Examples- She felt her cheeks redden as he spoke to her.
 - As she started to get annoyed, she could feel herself reddening.
 - His face reddened with embarrassment.
 
Oxford Collocations DictionaryRedden is used with these nouns as the subject:- cheek
 - ear
 - face
 - …