"Tub thumper" is a colloquial term that describes someone who makes loud, forceful and enthusiastic speeches or pronouncements in public. Some synonymous terms for "tub thumper" are "rhetorical bombast," "loudmouth," "swaggerer," "blowhard," "zealot," "rabble-rouser" and "demagogue." These terms are often used to describe individuals who use inflammatory language or grandiose gestures to elicit strong emotions from a crowd in order to sway public opinion. Such individuals attempt to take advantage of people's fears and insecurities to achieve their own agenda, often by promoting false or exaggerated ideas. While "tub thumper" and its synonyms may be entertaining to listen to, it is important to be discerning and not easily influenced by such individuals.