1du·pli·cate 
/ˈdu:plɪkət, Brit ˈdju:plɪkət/ adjective
always used before a noun /ˈdu:plɪkət, Brit ˈdju:plɪkət/ adjective : exactly the same as something else
▪ I began receiving duplicate copies of the magazine every month. : made as an exact copy of something else ▪ I had a duplicate key made. — compare triplicate
▪ I began receiving duplicate copies of the magazine every month. : made as an exact copy of something else ▪ I had a duplicate key made. — compare triplicate
