Na ‧ der, Ralph /ˈneɪdəʳ, rælf/ BrE AmE
(1934–) a US lawyer known for criticizing the government and big companies, and for fighting for the rights and protection of ↑ consumer s (=people who buy goods and services) . He was a ↑ candidate in the elections for US President in 2000, 2004, and 2008.