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.
Not to be confused with creatinine. Creatine (/ËkriËÉtiËn/ or /ËkriËÉtÉªn/) is a nitrogenous organic acid that occurs naturally in vertebrates. Its main role is to facilitate recycling of adenosine triphosphate (ATP), the energy currency of the cell, primarily in muscle and brain tissue.