Here are the possible solutions for person who knows how to crack the whip clue
Answer
Clue
Relevancy
tamer
Clue
Person who knows how to crack the whip
devo
Clue
"It's not too late / To whip it / Whip it good" singers
Definition
(short for) devolution, as in devo max, an arrangement in which a central government transfers the maximum amount of authority to a regional government while still retaining sovereignty over it
lash
Clue
Whip it, whip it real good
Definition
to strike with a whip
evil
Clue
"Who knows what ___ lurks in the hearts of men? The Shadow knows!"
Definition
wickedness or depravity
laotse
Clue
Who wrote "He who knows others is wise; he who knows himself is enlightened"
pedant
Clue
He knows he knows
Definition
a person who parades or reveres excessively academic learning or technical knowledge