incid.issemus V 3 1 PLUP ACTIVE SUB 1 P
incido, incidere, incidi, incasus V (3rd) [XXXBX]
happen; fall into, fall in with, meet; fall upon, assail;
incido, incidere, incidi, incisus V (3rd) [XXXBX]
cut into, cut open; inscribe, engrave inscription; break off;

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.