The word "quavering" means to shake or tremble in one's voice. Its antonyms include "steady," "bold," "confident," "assured," and "firm." If someone speaks with a steady voice, it means they are composed and not showing any signs of nervousness. A bold voice implies a level of assertiveness, while a confident voice denotes sureness in one's words. An assured voice displays self-assurance, while a firm voice suggests a clear and resolute speaking style. All of these antonyms for "more quavering" portray a sense of composure and control of one's voice, which may be necessary in certain situations, such as public speaking or negotiations.