Definition of "richen"

richen

/ˈɹɪt͡ʃən/

verb
third-person singular simple present richens, present participle richening, simple past and past participle richened
1. (transitive) To make or render rich or richer.
2. (intransitive) To become rich or richer; become superior in quality, condition or effectiveness.
3. (intransitive, of a colour) To gain richness; become heightened or intensified in brilliancy.