i SUFFIX
-er, makes adjective comparative;
fixi.us ADJ 0 0 NOM S N COMP
fixi.us ADJ 0 0 VOC S N COMP
fixi.us ADJ 0 0 ACC S N COMP
fixus, fixa, fixum ADJ [XXXCO]
fixed; firmly established (decision/ordinance), unhangable, irrevocable;
unwavering (person); immovable; constant; fitted/set with;
i SUFFIX
makes a verb PERF PPL into an adjective COMP (amat.ior => more loved);
fixi.us ADJ 0 0 NOM S N COMP
fixi.us ADJ 0 0 VOC S N COMP
fixi.us ADJ 0 0 ACC S N COMP
figo, figere, fixi, fixus V (3rd) [XXXBX]
fasten, fix; pierce, transfix; establish;

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.