cavern.are V 1 1 PRES ACTIVE INF 0 X
cavern.are V 1 1 PRES PASSIVE IND 2 S Early
cavern.are V 1 1 PRES PASSIVE IMP 2 S
caverno, cavernare, cavernavi, cavernatus V (1st) TRANS [DXXFS] Late veryrare
make hollow;
Syncope r => v.r
Syncopated perfect often drops the 'v' and contracts vowel
cavernav.ere V 1 1 PERF ACTIVE IND 3 P
caverno, cavernare, cavernavi, cavernatus V (1st) TRANS [DXXFS] Late veryrare
make hollow;

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.