verb (used without object), ser·mon·ized, ser·mon·iz·ing.
- to deliver or compose a sermon; preach.
verb (used with object), ser·mon·ized, ser·mon·iz·ing.
- to give exhortation to; lecture.
- to talk to or address (a person or audience) as if delivering a sermon
v.1630s, from Medieval Latin sermonizari, from Latin sermo (see sermon). “Chiefly depreciatory” [OED]. Related: Sermonizing.