comprehend

verb2

1. •
   To understand or grasp fully and thoroughly; to plumb.

   • I just can't comprehend how someone could be a butcher and vegetarian at the same time.
2. •
   (no longer used) To include, comprise; to contain.

   • And lothly mouth, unmeete a mouth to bee, / That nought but gall and venim comprehended […]. — 1596