The antonyms for the word "cleaned on" can be "dirty", "unclean", "filthy", "grimy", or "foul". These words refer to a state of being unclean or not free from dirt, dust, or other unwanted substances. Conversely, if something is "cleaned off", it means it has been removed and is now free of any offending materials. The importance of cleanliness cannot be overstated, as it is a vital aspect of maintaining hygiene and preventing the spread of disease. Therefore, it is essential to ensure that surfaces, objects, and spaces are regularly cleaned and free from any unwanted substances that could compromise our health and well-being.