The word "multitude" refers to a large group or number of something. Synonyms for this term include "crowd," "mass," "throng," "horde," "army," "assembly," "audience," "people," "gang," and "host." Each of these synonyms carries a slightly different connotation or emphasis, such as "crowd" suggesting a more informal, spontaneous grouping, or "horde" invoking a sense of chaos or disorder. Ultimately, selecting the right synonym depends on the context and tone of the writing or speech, but having a range of options can enhance communication and expression.