obukakanyavu, obukalubo.

o- (bu/-) hardness; state of not being well done (of cooked food, meat); difficulty; fig. obstinacy, stubbornness. cf. kaluba, -kalubo.

a- (ka/bu) kind of wild gourd. It is inedible and characterized by extreme hardness.

e- (n/n) flintiness, hardness.