que TACKON
-que = and (enclitic, translated before attached word); completes plerus/uter;
frequentissi.mum ADJ 3 1 NOM S N SUPER
frequentissi.mum ADJ 3 1 VOC S N SUPER
frequentissi.mum ADJ 3 1 ACC S M SUPER
frequentissi.mum ADJ 3 1 ACC S N SUPER
frequens, frequentis (gen.), frequentior -or -us, frequentissimus -a -um ADJ [XXXAX]
crowded; numerous, full, frequented, populous; repeated, frequent, constant;

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.