From Longman Dictionary of Contemporary Englishsermonizeser‧mon‧ize (also sermonise British English) /ˈsɜːmənaɪz $ ˈsɜːr-/ verb [intransitive] TALK TO somebodyto give a lot of moral advice to someone when they do not want it – used to show disapproval SYN preach→ See Verb table
Examples from the Corpus
sermonize• You have to sermonize about the good times.• No wonder they sermonize and embrace.• Bennett and others promote cultural renewal through public sermonizing and support for local initiatives like church programs to teach parental responsibility. 