"Begrimed" is an adjective that describes something as being covered with dirt, soot, or grime. Its antonyms are "clean," "unsoiled," "pure," "spotless," "flawless," "white," and "bright." These words signify the opposite of "begrimed" and indicate a lack of dirt or contamination. Objects that are "clean" are free from dirt and impurities, while things that are "unsoiled" are not stained or dirty. "Pure" refers to something that is free from any kind of impurity or contamination. "Spotless" indicates that something is completely clean and without any spot or stain. "Flawless" refers to something that is perfect, without any imperfection or blemish.