Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
The word concubare could not be parsed. Trying a normal dictionary lookup:
No entries found. Showing closest matches:
* concŭbātĭo, ōnis, f. [concubo], a lying or reclining upon: dura lecti, Cael. Aur. Acut. 2, 37, 193.