i SUFFIX
-er, makes adjective comparative;
placati.orem ADJ 0 0 ACC S C COMP
placatus, placata, placatum ADJ [XXXDX] lesser
kindly disposed; peaceful, calm;
i SUFFIX
makes a verb PERF PPL into an adjective COMP (amat.ior => more loved);
placati.orem ADJ 0 0 ACC S C COMP
placo, placare, placavi, placatus V (1st) [XXXBX]
appease; placate; reconcile;

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.