Not given a hearing; not listened to: unheard objections. (adjective)
Archaic Not heard of; obscure.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "unheard" in a sentence
"BILL PAXTON, of the Texas Forest Service, describing the moisture content of Texas grass Sunday at what he called an "unheard of" 2% as wildfires continued burning in the drought-stricken state, where more than 34,000 acres have been consumed"
"He noted that 45 per cent of unemployed Americans have been without work for six months or more, which he described as "unheard of.""
"Endovanera, a label unheard of in these circles have put together a very interesting collection mixing some great materials and innovation."