supermarketeer
/ˌsuːpəmɑːkɪtˈɪə/ /ˌsjuːpəmɑːkɪˈtɪə/originally US. Now chiefly British
noun
A person or company involved in the supermarket business; a supermarket chain.
Origin
1940s; earliest use found in The Wall Street Journal. From supermarket + -eer, after marketeer.