Mental Grasp

Mental grasp  crossword clue. The Observer 7 May 2017 SPEEDY CROSSWORD Clue No. 1,127

Mental grasp called:  SANITY – UPTAKE – WISDOM

The suitable answer is UPTAKE.

UPTAKE meaning
noun
1. apprehension; understanding or comprehension; mental grasp:
quick on the uptake.
2. an act or instance of taking up; a lifting:
the uptake of fertilizer by machines.
3. Also called take-up. Machinery. a pipe or passage leading upward from below, as for conducting smoke or a current of air.