Improving vocabulary benefits UPSC aspirants by enhancing the quality of their answers. A rich vocabulary allows candidates to express ideas more precisely and persuasively, which is crucial for both essays and GS papers. It aids in articulating complex thoughts and arguments clearly, thereby reflecting critical thinking skills. Moreover, familiarity with synonyms and antonyms promotes variety in writing, keeping answers engaging. Strategic use of relevant terminology can also help in making strong impressions during interviews. Daily reading, practicing contextual usage, and learning new words can significantly enhance a candidate's language proficiency, benefiting their overall performance.