du PREFIX
two (numerical prefix);
i SUFFIX
-er, makes adjective comparative;
pleri.us ADJ 0 0 NOM S N COMP
pleri.us ADJ 0 0 VOC S N COMP
pleri.us ADJ 0 0 ACC S N COMP
plerus, plera, plerum ADJ [XXXAX]
(w/que) the majority, most, very great part; about all; very many, a good many;

Credits:
This, our local install of the popular standby Whitaker's Words, is possible thanks to the resurrection of the venerable project at William Whitaker's Words, where you will also find extensive documentation. The corresponding GitHub repository is where you can submit issues about missing forms and analyses.
This web interface by Walter M. Shandruk.