The function f(x) takes a word input and returns a value between 0 and 1, indicating the degree to which the word is associated with the concept of "size" or "magnitude". The function is selective for words that are not very "big" or "large", and returns lower values for words that are more "small" or "tiny".

Please let me know if this description accurately reflects the behavior of the function. If not, please provide additional input-output pairs to help me refine the description.