The word "piningly" is an adverb used to describe something done with a strong yearning or feeling of longing. Some common synonyms for piningly are desirously, longingly, wistfully, yearningly, and passionately. These words all convey the idea of a deep longing or desire for something or someone that is currently out of reach. Other similar words that may be used interchangeably with piningly include mournfully, nostalgically, and regretfully. When crafting writing pieces, it is important to use a variety of synonyms to keep the reader's attention and add depth and nuance to the language.