This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. Slang To understand profoundly through intuition or empathy.

v. To have or to have acquired an intuitive understanding of; to know (something) without having to think (such as knowing the number of objects in a collection without needing to count them: see subitize).

v. To fully and completely understand something in all its details and intricacies.

v. get the meaning of something

"For those of you who read Robert Heinlein, you will realize that I stole the term grok from his novel, Strangers In A Strange Land, which was practically required reading for hippies."

grokked    grokking   

understand   

figure    cotton on    intuit    get onto    catch on    get wise    tumble    twig    digest    get it