Well, drat! Pierre knew my opposites: "Which one can cleave. Precisely: findible = which can be cloven; jungible = which can be cleaved. fendre, joindre." According to my source: findible - adj. - able to be cleft or split jungible - adj. - that may be joined I don't have another set of opposites lined up, so try this single word: ponask BB, Hutch