The word "someones" is a possessive form of the word "someone," which means an unspecified person or individual. There are several synonyms for "someones" that can be used interchangeably to convey the same meaning. Some of these synonyms include "someone's," "another's," "another person's," and "a person's." These synonyms can be used in various contexts, such as in sentences that refer to ownership, possession, responsibility, or identity. In summary, the word "someones" is a useful word, but it is essential to know its synonyms to make your writing more varied and to avoid repetition.