yellow up

English

Verb

yellow up (third-person singular simple present yellows up, present participle yellowing up, simple past and past participle yellowed up)

1. (transitive, intransitive, literally) To become or make (something) yellow, such as a material aging, a plant leaf or fruit ripening or developing a rust disease.
2. (transitive, intransitive) To put on yellowface; to imitate or pretend to be of East Asian descent.