belli.us ADJ 1 1 NOM S N COMP
belli.us ADJ 1 1 VOC S N COMP
belli.us ADJ 1 1 ACC S N COMP
bellus, bella -um, bellior -or -us, bellissimus -a -um ADJ [XXXBO]
pretty, handsome, charming, pleasant, agreeable, polite; nice, fine, excellent;
bellius ADV COMP
belle, bellius, bellissime ADV [XXXBO]
well, nicely; satisfactorily/agreeably, suitably/neatly; fortunately/favorably;
well; [w/esse => have a nice time; w/habere => be well; w/est => all is well];

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.