"Kroto" is a word without any known synonyms, as it is a term that specifically refers to the insect species Pachycondyla analis. This species is commonly known as the "bullet ant" due to the intense pain caused by their sting. While there may be slang or regional terms used to describe the bullet ant, these are not true synonyms for the word kroto. In scientific and academic contexts, the Latin name Pachycondyla analis is used to refer to this species, though the term kroto may also be understood within entomology circles.