Synonym Discussion of essential. essential, fundamental, vital, cardinal mean so important as to be indispensable. essential implies belonging to the very nature of a thing and therefore being incapable of removal without destroying the thing itself or its character conflict is essential in drama.
The definition of a cretin is a very stupid person, or a person suffering from the disease cretinism, which causes mental problems and deformity. An example of a cretin is a person who constantly makes stupid and horrible mistakes. 2  An example of a cretin is someone with physical deformities due to the disease.
Full Definition of APPETIZER. 1. : a food or drink that stimulates the appetite and is usually served before a meal. 2. See appetizer defined for English-language learners.See appetizer defined for kids. ADVERTISEMENT.ull Definition of APPETIZER. 1. : a food or drink that stimulates the appetite and is usually served before a meal. 2. See appetizer defined for English-language learners. See appetizer defined for kids. ADVERTISEMENT.