Unblighted is a word that means free from any kind of blight or disease. The antonyms for "unblighted" are those that mean the opposite of this expression. Some common antonyms for "unblighted" are blighted, diseased, afflicted, corrupted, damaged, destroyed, ruined, and spoiled. Each of these words describes something that is negatively impacted by a disease or other external harm. It is important to use antonyms in writing to convey the right emotion and tone, and to give readers a better understanding of the subject matter being discussed. The use of antonyms helps to create contrast and highlights the differences between two opposite things.