Spanish tos

← Proto-Indo-European (inherited)

← Proto-Indo-European *(s)tewd- (mention)

← Proto-Indo-European *(s)tew- (mention)

← Proto-Italic *tussis (inherited)

← Latin tussis (inherited)

← Old Spanish tos (inherited)

→ Spanish pertussis (mention)

→ Spanish tosferina (mention)

→ Spanish tosecilla (affix)

→ Galician tose (cognate)