Bengali এক

← Proto-Indo-Iranian *Háykas (inherited)

← Magadhi Prakrit 𑀏𑀓𑁆𑀓 (inherited)

← Proto-Indo-European *óynos (inherited)

← Sanskrit एक (inherited)

→ Bengali একরকম (compound)

→ Sylheti ꠄꠇ (cognate)