Roots/*septm̥septm̥“seven, the number seven”Widely acceptednumberseven, seventhRoot for the number seven, yielding Latin septem, English seven, Greek hepta.Related Rootsdel-“to count, recount, tell”dwo-“two, a pair”déḱm̥“ten, a decade”h₁newn̥“nine, the number nine”h₃eḱtō“eight, the number eight”penkʷe“five, the number five”sem-“one, together”sem-₂“one, same, together”