an SUFFIX
-anus; (indicates former gens when adopted into another, Sejus -> Sejanus);
senan.us ADJ 1 1 NOM S M POS
senus, sena, senum ADJ [XXXDX] lesser
six each (pl.);
senex, senis (gen.), senior -or -us, - ADJ [XXXAX]
aged, old; [senior => Roman over 45];
an SUFFIX
-an, -ain; of, pertaining/belonging to; connected with; derived/coming from;
senan.us ADJ 1 1 NOM S M POS
senex, senis N (3rd) M [XXXDX] lesser
old man;

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.