English Adjective unm. (not comparable) (genealogy) Abbreviation of unmarried. 1864, Reuben Hyde Walworth, Hyde Genealogy, J. Munsell, page 1212:Octavia, d. unm [Octavia, died unmarried] 1979, John Joseph May, Danforth Genealogy, Charles H. Pope, →ISBN, page 80:Jonathan, b. [born] 25 Feb., 1773; d. unm. 3 April, 1797. Antonyms m. (“married”) References “Glossary of Genealogical Terms”, in Ancestry.com, n.d. Anagrams MUN, mun, Num., nmu, num., Mun., num, MunWikiwand - on Seamless Wikipedia browsing. On steroids.