"Smotheringly" is an adverb that denotes an act of choking or suffocating. There are various synonyms for this word such as suffocatingly, oppressively, stiflingly, cloyingly, oppressive, and so on. These synonyms can be used interchangeably based on the contextual requirement. For instance, in a room filled with people and inadequate ventilation, one might feel suffocatingly hot. Similarly, if someone is under a lot of pressure or feels overpowered by something, they might use the word oppressive or smothering to describe their feelings. Overall, these synonyms serve a vital role in enriching one's vocabulary and providing an accurate and descriptive way to express one's thoughts and feelings.