ungreenableadj.
Etymology: Previous versions of the OED give the stress as: unˈgreenable.
1882 25 Nov. 704/1 Aniline blacks formed in the cold are greenable, but if developed at a temperature higher than 70° Centigrade they are ungreenable.
This entry has not yet been fully updated (first published 1924; most recently modified version published online June 2019).