Proto-Indo-European *tres-

→ English terror (mention)

→ Persian ترسیدن (derived)

→ Persian سهم (mention)

→ Ancient Greek τρέμω (derived)

→ Ancient Greek τρέω (derived)

→ Ancient Greek τρήρων (derived)

→ Hindi त्रासदी (root)

→ Indonesian teror (mention)

→ Northern Kurdish tirsîn (inherited)

→ Latin terreo (derived)

→ Norman tèrribl'ye (mention)

→ Sanskrit त्रसति (inherited)

→ Sanskrit त्रास (mention)