Sermonize \Ser"mon*ize\, v. i. [imp. & p. p. {Sermonized}; p. pr. & vb. n. {Sermonizing}.] 1. To compose or write a sermon or sermons; to preach. [1913 Webster] 2. To inculcate rigid rules. [R.] --Chesterfield. [1913 Webster]