Mourningly is an adverb that describes a person or situation that is characterized by grief, sadness, or a sense of loss. Other synonyms for mourningly include mournfully, sorrowfully, sadly, and despondently. Each of these synonyms can be used interchangeably to describe a person or atmosphere that is marked by a sense of mourning. Additionally, words such as lamentably, heartbrokenly, and funereally can also be used to convey a similar sense of sorrow. Choosing the right synonym to describe a specific situation will depend on the context and the emotional tone that the writer is trying to convey.