Sanskrit तवस्

← Proto-Indo-Iranian *tawHā́s (inherited)

← Proto-Indo-Aryan *tawHā́s (inherited)

← Proto-Indo-European (inherited)

← Proto-Indo-European *tewh₂- (mention)

→ Persian توان (cognate)

→ Indonesian tawas (derived)

→ Indonesian tabah (mention)

→ Sanskrit स्वतवस् (compound)