The word "singsonged" typically refers to a high-pitched, repetitive or monotonous style of speech or singing. Antonyms for singsonged would be words or phrases that describe speech or singing that is varied, dynamic and expressive. Examples would include: spontaneous, improvisational, heartfelt, authentic, soulful, emotive, passionate, poetic, lyrical, oratory, articulate, or animated. These terms emphasize the skill and artistry involved in effective communication, and suggest a range of registers, from raw emotion to sophisticated wordplay. By using a broader range of linguistic techniques, speakers and performers can engage their audiences more fully and connect with them in deeper and more meaningful ways.