demonstrator C2+

/ˈdɛmənˌstreɪtɚ/ a person who takes part in a public protest, or who shows how something works

remonstration C2+

/ˌrɛmənˈstreɪʃən/ a forceful protest or objection

demonstrable C2+

/dɪˈmɑnstrəbəl/ capable of being shown or logically proved

demonstratedly C2+

/dɪˈmɑnstreɪtɪdli/ in a manner that has been clearly shown or proven

demonstrative C2+

/dɪˈmɑnstrətɪv/ openly expressive of feelings; or a word pointing to a referent

muster C2+

/ˈmʌstər/ to assemble or summon, especially troops or courage

remonstratingly C2+

/rɪˈmɑnstreɪtɪŋli/ in a manner expressing protest or earnest objection