The antonyms for the word "more germfree" could be less clean, dirtier, contaminated, or infected. These are the opposite terms that convey the opposite meaning of "more germfree." When we talk about germ-free, it means free from bacteria, viruses, and other microorganisms that can cause infections or diseases. However, when we say "less clean" or "dirtier," it indicates the presence of germs or dirt that can harm our health. Similarly, "contaminated" and "infected" also indicate the existence of harmful microorganisms that can pose a threat to human safety. Therefore, it is essential to maintain cleanliness and hygiene to prevent the growth of germs and bacteria.