The antonyms for the phrase "more deep toned" can range from shallow, flat, thin, weak, to light. These words are often used to describe sounds or voices that lack depth, resonance or volume. Shallow sounds lack the fullness and richness of a deeper tone, while flat sounds are typically monotone and lack variation in pitch. Thin and weak tones are frail and brittle, while light tones are delicate and airy. The antonyms for "more deep toned" can be used to convey specific emotions or moods, like sadness, boredom, or disinterest, and are often employed in music, theatre, and other creative mediums.