English ought

← Old English āhte (inherited)

← Old English āgan (derived)

← English owe (suffix)

← English t (suffix)

← Middle English oughte (inherited)

← Middle English aughte (mention)

← Middle English aȝte (mention)

← Middle English ahte (mention)

← Proto-Indo-European *h₂eyḱ- (root)

→ English want (mention)

→ English oughtn't (suffix)

→ English aught (mention)

→ English aught (link)

→ English owe (mention)

→ English oughtness (suffix)

→ English oughtest (suffix)

→ English oughteth (suffix)

→ English oughtism (suffix)

→ Old English agan (link)