Antonyms for the word "more decontaminated" refer to situations where something is contaminated or less clean. These can include terms such as "contaminated," "infected," "polluted," "dirty," "filthy," or "unsanitary." These words all indicate an atmosphere or substance that has not been fully and properly cleaned, leaving harmful substances and bacteria behind. In contrast, "more decontaminated" suggests a place or object that has been thoroughly cleaned and sanitized, making it safe for use. By understanding the antonyms of "more decontaminated," individuals can identify areas to avoid and take precautions to prevent contamination or infection.