Italian word imprevedibile comes from Italian in-, Italian prevedibile (Logical, obvious. Predictable, foreseeable, to be expected.)

Detailed word origin of imprevedibile

Dictionary entry	Language	Definition
in-	Italian (ita)	Used to denote negation or opposition or privation; un-; in-; a- (forms verbs) Used to denote derivation.. (obsolete, rare) Used as an intensifier.
prevedibile	Italian (ita)	Logical, obvious. Predictable, foreseeable, to be expected.
imprevedibile	Italian (ita)	Unpredictable, unforeseeable.

Words with the same origin as imprevedibile