ˈrumness [f. rum a.2 + -ness.] Singularity, oddness, oddity. 1865Dickens Mut. Fr. iii. iii, The Fates ordered him into it again. Which is rumness: ain't it?1892Stevenson & Osbourne Wrecker (ed. 2) 220 You see something of the rumness of this job, but not the whole.