Belittlingly is an adverb that suggests an action of making someone feel inferior, depreciating or mocking them. Synonyms for the word belittlingly could be patronizingly, condescendingly, haughtily, disdainfully, arrogantly, contemptuously or insultingly. These words give an idea of how a person behaves towards someone who they may consider inferior or unintelligent. To use these words in a sentence, one could say, "She spoke to him in a patronizingly tone," or "He looked at her disdainfully, making her feel worthless." Using synonyms can enhance the potency of your sentences, therefore it is important to understand their meanings and usage exactly.