French aigre

← French âcre (doublet)

← Proto-Indo-European *h₂ḱrós (derived)

← Proto-Indo-European *h₂ḱrós (derived(fr/fro))

← Proto-Italic *akris (inherited)

← Proto-Italic *akris (inherited(fr/fro))

← Latin (mention)

← Latin acer (inherited)

← Latin acer (inherited(fr/fro))

→ English eager (mention)

→ English alegar (derived)

→ Esperanto akra (derived)

→ French maigre (mention)

→ French aigu (mention)

→ French aigreur (suffix)

→ French aigrement (suffix)

→ French âcre (doublet)

→ French aigrir (suffix)

→ French aigrissement (suffix)