1. grasp mentally; understand: "he couldn't comprehend her reasons for marrying Lovat"Similarunderstandgrasptake inseeapprehendfollowmake sense offathommake outpuzzle outget to the bottom ofpenetraterealizeperceivediscerndivineunraveldecipherinterpretpiece togetherinformal:work outfigure outmake head or tail ofget one's head aroundwrap one's mind aroundtake on boardget a fix onget the hang ofget the drift ofcatch ontolatch ontotumble tocrackdiggetsee the lightget the picturetwigsuss outsusssavvy