Benighted and Disadvantaged

Benighted adjective - Lacking in education or the knowledge gained from books.

Disadvantaged and benighted are semantically related. In some cases you can use "Disadvantaged" instead an adjective "Benighted".

Disadvantaged adjective - Kept from having the necessities of life or a healthful environment.

Benighted and disadvantaged are semantically related. Sometimes you can replace term "Benighted" with "Disadvantaged", this adjectives are similar.