seventeen

the word 'seventeen' is a transparent compound from old english, formed by combining the word for 'seven' with a variant of the word for 'ten'. this structure follows the common germanic pattern for forming the teens, literally meaning "seven and ten". the old english '-tēne' suffix evolved from the proto-germanic 'tehun', which is itself derived from the proto-indo-european 'déḱm̥t', the root for 'ten'. the logic is purely arithmetic, directly encoding the sum of seven and ten into the word's morphology. this straightforward numerical naming convention has remained stable from its old english form 'seofontīene' to the modern english 'seventeen'.

Structure: seven (7) + teen (ten) 'seven' is from old english 'seofon', of germanic origin, related to dutch 'zeven' and german 'sieben', from an indo-european root shared by latin 'septem' and greek 'hepta'. it functions as the cardinal number base. 'teen' is a suffix from old english '-tēne', '-tīene', a variant of 'tīen' (ten), used to form the cardinal numbers from 13 to 19. it functions as a suffix denoting 'ten more than'.