There are many antonyms for the word "more sawtooth" that can describe a surface that is smooth, flat, even, or level. While "sawtooth" suggests a jagged or uneven surface, antonyms like "smooth," "flat," and "even" suggest a surface that is free from irregularities, bumps, or rough spots. Another antonym that can describe a surface that is not sawtooth is "plain" - this suggests a surface that is simple, unadorned, and unembellished. Other antonyms include "unrippled," "unwavy," "unridged," and "unharmed." Ultimately, there are many words that can describe a surface that is not sawtooth, and each one brings a slightly different nuance to the meaning.