Definition
To act "tunefully" means to do something in a melodious and harmonious way, especially with regard to music or singing. It suggests a pleasant and musical quality that is pleasing to the ear. Think of it as the opposite of something being out of tune or discordant; it's like a choir singing in perfect harmony or a skilled musician playing a beautiful piece. "Tunefully" highlights a musical and harmonious quality. Imagine a singer hitting all the right notes effortlessly.