Yehoash was "generally recognized by those familiar with [Yiddish] literature, as its greatest living poet and one of its most skillful raconteurs", according to The New York Times book review in 1923.

[1] Born in Virbalis in the Russian Empire (now Lithuania), he emigrated to the United States in 1890 and settled in New York City.

His literary output included verse, translations, poetry, short stories, essays and fables in Yiddish and some articles in English.

With Charles David Spivak, he wrote a dictionary of the loshn koydesh (Mishnaic Hebrew and Jewish Babylonian Aramaic) elements of Yiddish, illustrated with idiomatic expressions and proverbs.

[3] He died suddenly at his home at 943 Whitlock Avenue in The Bronx, where he lived with his wife, Flora, and his daughter, Evelyn Chave, at the time a student at Hunter College.