Most chiffon is a phrase that implies light, delicate, and airy qualities. Its antonyms, however, are words that denote heavy, solid, and opaque characteristics. Some suitable antonyms for most chiffon are heavy, thick, opaque, rough, coarse, and coarse-grained. These words connote a certain amount of thickness, weight, and opacity that contrast with most chiffon's elegance and softness. Other antonyms can include crude, dense, dull, and gloomy, which express an overall lack of refinement, lightness, and delicacy. In general, these antonyms offer a counterpoint to most chiffon's light, airy, and ethereal qualities.