com PREFIX
- together, completely, forcibly, strongly;
ari SUFFIX
-er; -ist; dealer in thing, maker/artisan (argent.arius = money/silver changer)
portionari.us N 2 1 NOM S M
portio, portionis N (3rd) F [XXXDX] lesser
part, portion, share; proportion; [pro portione => proportionally];
com PREFIX
- together, completely, forcibly, strongly;
ari SUFFIX
of, pertaining/belonging to; connected with; derived from; made of; -like;
portionari.us ADJ 1 1 NOM S M POS
portio, portionis N (3rd) F [XXXDX] lesser
part, portion, share; proportion; [pro portione => proportionally];

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.