To convey a message by nonverbal means:
To act (a theatrical role) with insufficient emphasis or too great restraint
To deliver a harangue.
To write the destination on (a letter or parcel)
To list or enumerate:
To adhere or become legally effective, especially in connection with something or upon some event. For example, certain rights and responsibilities attach to becoming a parent.
To give formal notice of the ending of (a treaty, armistice, etc.)
To give vent to angry disapproval; protest vehemently.
To lecture is defined as to deliver a speech or to talk to someone about why he or she was wrong.
To sum up or conclude a speech
To pontificate is to express your opinion in an annoying way, often because you go on too long or because you are too much of a know-it-all.
To talk or say in a loud, wild, extravagant way; declaim violently; rave
To rave is defined as to speak or move violently or wildly, particularly in appreciation of something.
To form (a word) with the mouth soundlessly
To speak in a loud, pompous, or prolonged manner
Find another word for declaim. In this page you can discover 20 synonyms, antonyms, idiomatic expressions, and related words for declaim, like: speak, underact, proclaim, harangue, address, recite, attach, denounce, inveigh, lecture and orate.