The most common and most likely answer to this crossword clue is the 6 letter word JOGGLE
J
O
G
G
L
E
Buddy explains!
The straight part
We know that "Shake" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case shake = joggle.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does JOGGLE mean?
JOGGLE noun- A step formed in material by two adjacent reverse bends.
- A notch or tooth in the joining surface of any piece of building material to prevent slipping.
- To shake slightly; to push suddenly but slightly, so as to cause to shake or totter; to jostle; to jog.
- To shake or totter; to slip out of place.
- To jog or run while juggling.
- To join by means of joggles, so as to prevent sliding apart; sometimes, loosely, to dowel.