subcumb.o V 3 1 PRES ACTIVE IND 1 S
subcumbo, subcumbere, subcubui, subcubitus V (3rd) INTRANS [XXXAO]
sink/fall/lie/break down; succumb/collapse (w/weight); suffer/concede defeat;
surrender; yield; lay under; lie under/submit (female to male); cohabit (L+S);
give in/way; lower itself (animal to take load); be rival to (DAT of a woman);

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.