rearmost
From Longman Dictionary of Contemporary Englishrearmostrear‧most /ˈrɪəməʊst $ ˈrɪrmoʊst/ adjective [only before noun] LASTfurthest back SYN last the rearmost seatsExamples from the Corpusrearmost• Only a few of the rearmost broke away and escaped back towards Ruthyn.• Exits are also located in the rearmost section of the plane.• The rearmost sections of the leading edges might be detached from the joining ferrules.