lagger(n = noun.person) dawdler, drone, laggard, poke, trailer - someone who takes more time than necessary; someone who lags behind;
is a kind of bum, do-nothing, idler, layabout, loafer
has particulars: lingerer, loiterer, plodder, slowcoach, slowpoke, stick-in-the-mud, potterer, putterer, straggler, strayer
Derived form verb lag₁

   A laggard. [1913 Webster]