breviloquium

From Wiktionary:

From brevis +‎ loquor.

(Classical Latin) IPA(key): /bre.u̯iˈlo.kʷi.um/, [breu̯ɪˈɫ̪ɔkʷiʊ̃ˑ]
(modern Italianate Ecclesiastical) IPA(key): /bre.viˈlo.kwi.um/, [breviˈlɔːkwium]

breviloquiumn (genitive breviloquiī or breviloquī); second declension

brevity of speech, conciseness

Second-declension noun (neuter).

	singular	plural
nominative	breviloquium	breviloquia
genitive	breviloquiī	breviloquiōrum
	breviloquī1
dative	breviloquiō	breviloquiīs
accusative	breviloquium	breviloquia
ablative	breviloquiō	breviloquiīs
vocative	breviloquium	breviloquia

1Found in older Latin (until the Augustan Age).

“breviloquium”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
breviloquium in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.