Sanskrit अष्ठीवत्

← Proto-Indo-Iranian *HastčiHwánts (inherited)

← Proto-Indo-Aryan *HaṣṭʰiHwánts (inherited)

← Sanskrit अस्थि (mention)

← Old Armenian ճիւ (cognate)

→ Assamese আঁঠু (inherited)

→ Bengali হাঁটু (derived)

→ Bengali আঁঠু (derived)

→ Bengali আঁডু (derived)

→ Early Assamese আণ্ঠু (inherited)

→ Old Armenian ճիւ (cognate)