DECLA'IM, verb intransitive [Latin to cry out.] 1. To speak a set oration in public; to speak rhetorically; to make a formal speech, or oration; as, the students declaim twice a week. 2. To harangue; to speak loudly or earnestly, to a public body or assembly, with a view to convince their minds or move their passions. DECLA'IM, verb transitive 1. To speak in public. 2. To speak in favor of; to advocate.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI