sixty

the word 'sixty' is a direct descendant from old english 'sixtig', which itself is a compound of 'siex' (six) and '-tig' (a group of ten). this '-tig' suffix is of proto-germanic origin, related to the notion of a decade or a set of ten. the straightforward compounding logic, where the first element specifies the count and the suffix denotes the base-ten multiple, is a common pattern in the english numbering system. this structure has remained remarkably stable from its germanic roots into modern english, clearly conveying the meaning of six tens.

Structure: six (6) + ty (multiple of ten) 'six' is from old english 'siex', of germanic origin, meaning the number 6. 'ty' is a shortening of the old english suffix '-tig', meaning a group of ten.