i SUFFIX
art or craft done by the person (abstract noun of person); office of, -ship;
dati.um N 1 1 GEN P F uncommon
datum, dati N (2nd) N [XXXCO]
present/gift; that which is given; debit; [~ dandis => w/all supplied];
datus, datus N (4th) M [BXXFO] Early veryrare
act of giving;
i SUFFIX
makes abstract noun of the verb; place/instrument/result of verb action;
dati.um N 2 2 NOM S N
dati.um N 2 2 VOC S N
dati.um N 2 2 ACC S N
dati.um N 2 2 GEN P N uncommon
dato, datare, datavi, datatus V (1st) TRANS [XXXDO] lesser
be in habit of giving; make a practice of giving; give away, administer (L+S);

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.