Latin aestas

← Old English ād (mention)

← Ancient Greek αἴθω (mention)

← Proto-Indo-European *h₂eydʰ- (root)

← Proto-Indo-European *h₂eydʰ- (derived)

← Proto-Indo-European *-teh₂ts (mention)

← Proto-Italic *aissāts (inherited)

← Latin aestus (cognate)

← Latin aedis (mention)

→ Dalmatian instuat (inherited)

→ French estival (mention)

→ Old French esté (inherited)

→ Friulian istât (mention)

→ Indonesian estival (mention)

→ Latin aestivus (suffix)

→ Piedmontese istà (inherited)

→ Portuguese estival (mention)

→ Romansch stad (inherited)

→ Romansch sted (inherited)

→ Romansch stà (inherited)