Charvaka
Charvaka (Sanskrit: चार्वाक; IAST: Cārvāka), also known as Lokāyata, was an ancient school of Indian materialism. It rejects religious authorities like the Vedas and opposes Hinduism. It was a materialistic and atheistic school of philosophy. Along with Buddhism and Jainism, it was one of the three major nastika schools of  Indian philosophy.