The word "most deep toned" refers to a sound that is low-pitched and resonant. Antonyms for this phrase would be words that describe sounds that are high-pitched or light in tone. Some examples of antonyms might include words like "shrill," "high-pitched," "treble," or "bright." These words describe sounds that are at the opposite end of the pitch spectrum from a deep, resonant tone. While a deep tone might evoke feelings of depth, power, or authority, a high-pitched sound might convey a sense of lightness, energy, or excitement. By using the right antonyms, you can create vivid descriptions of sound that help your readers imagine the tone and mood of your writing.