why “seven”?

Question

I’ve always wondered why the numbers “one” through “ten” in the English language are all 1 syllable, but “seven” is the only one with 2 syllables. Not sure if this is just random and I notice things like that, or if there is actually a reason behind it.

In: Other

Answer 1

Old English seofon, of Germanic origin; related to Dutch zeven and German sieben, from an Indo-European root shared by Latin septem