French for-

← English for- (link)

← French fors (cognate)

← French hors (cognate)

← Old French for- (inherited)

← Proto-Germanic *fur- (derived)

← Proto-Germanic *fer- (mention)

← Proto-Germanic *fra- (mention)

← Proto-West Germanic *fur- (mention)

← Old High German firwirken (cognate)

← Old High German firleitan (cognate)

← Gothic 𐍆𐍂𐌰𐍅𐌰𐌿𐍂𐌷𐍄𐍃 (cognate)

← Proto-Indo-European *pro- (derived)

← Proto-Indo-European *per- (mention)

← Proto-Indo-European *pr- (mention)

← Latin forīs (mention)

← Latin forisfactus (mention)

← Latin [[foris]] [[coⁿsilio]] (mention)

→ French fourvoyer (affix)