The inferred meaning of a word

To conclude a statement from evidence and reasoning rather than just making something up.

D. should eventually be checked in a dictionary.

Explanation:

Any decision that is derived from a reasonable discussion, or a conclusion that is made based on evidence or proof is called or termed as the inferred meaning of the word.

As this conclusion is just based on an "educated guess" or reasoning based decision that came out of an evidence and facts cannot just be completely relied upon. It is just a speculation or a guess, so it is best to check and look up on the dictionary to get the true and intended meaning of any word said.