English bivouac

← French bivouac (borrowed)

← French biouac (mention)

← French bivac (mention)

← Alemannic German Biiwacht (derived)

← Alemannic German bii- (mention)

← Alemannic German Wacht (mention)

← Proto-Indo-European *-tus (root)

→ English bivouacking (suffix)

→ English bivouacked (suffix)

→ English bivy (suffix)

→ English bivvy (mention)

→ Esperanto bivako (borrowed)