Inborn reflex refers to an automatic and immediate response to a particular stimulus that is present in an organism even at birth. There are several synonyms for this term that are commonly used. These include innate reflex, natural reflex, instinctive reflex, and inherent reflex. These terms are often used interchangeably when referring to the same phenomenon. The use of synonyms can help to expand one's vocabulary and make language more interesting and diverse. Whatever term is used, the inborn reflex plays an essential role in the functioning of the nervous system and helps to ensure that organisms can respond to external stimuli quickly and effectively.