Quenya 

nattir-

verb. to look back

Elements

WordGloss
nan-“back (again), back (again); [ᴹQ.] backwards”
tir-“to watch (over), guard, heed; to look (at), gaze, observe, to watch (over), guard, heed; to look (at), gaze, observe; [ᴱQ.] to keep, preserve”