sermonises Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to give a speech about moral issues. Example Sentence This man always sermonises his beliefs. More Example Sentences The teacher sermonises on the importance of honesty. Synonyms preaches; lectures; teaches Antonyms listen Hear It! Say It! Write It! sermonises Switch to cursive Start Share with your friends: