how many words does average person know
several years ago we mentioned testyourvocab com here on the blog not long ago the site reached its two millionth test result and so the researchers have put together some data most adult native test takers range from 20000 35000 words average native test takers of age 8 already know 10000 words average native test takers of age 4 already know 5000 words adult native test takers learn almost 1 new word a day until middle age adult test taker vocabulary growth basically stops at middle age the most common vocabulary size for foreign test takers is 4500 words