underspeak verb 4noun 1forms 4 verb4 •To speak with understatement and/or modesty.Dentists often underspeak and therefore underrate dental conditions. Patients interpret these words to mean there is no problem, only to be surprised later when they learn treatment will be required. — 2002 •To speak without sufficient emphasis or volume.She was obviously nervous, and consequently underacted and underspoke her part several times ; yet, with her musical speech and natural manner, she should be a considerable acquisition to the company. — 1912 •To fail to say enough; to be too taciturn. •To speak at the same time as and more quietly than another.Today subliminal messages are sent by “underspeaking" on television, radio, and records and “invisigraph" (invisible messages) on printed ads. — 1985 noun1 •Speech that is characterized by understatement.But that really is a piece of marketing underspeak for this fantastic fetid backplot. — 2003 formsunderspoke · underspoken · underspeaking · underspeaks