Question

the suffix \-ness\ means \state of or condition.\ which word has a related meaning? --- rudeness definition thankful pinkish

Explanation:

The suffix "-ness" is used to form nouns that denote a state or condition. "Rudeness" is a noun formed with the suffix "-ness" (from the adjective "rude") and means the state or condition of being rude. "Definition" is a noun but not formed with the suffix "-ness". "Thankful" is an adjective. "Pinkish" is an adjective (formed with the suffix "-ish" meaning having a slight shade of a color).

Answer:

Rudeness