Vajra is a Sanskrit term that is commonly associated with Buddhism and Hinduism. While it is most commonly interpreted as meaning "thunderbolt" or "diamond," there are several other synonyms that are often used to describe this term. Some of the most popular alternatives for vajra include terms like "indestructible," "unbreakable," "invincible," and "impenetrable." Other synonyms for vajra may include descriptors like "irrefutable," "unstoppable," and "unyielding." Ultimately, the various synonyms for vajra all convey a sense of strength and power, suggesting that this word is often used to describe something that is virtually unstoppable and indestructible.