Here are the possible solutions for learn him or kill him twain clue
Answer
Clue
Relevancy
ill
Clue
"___ learn him or kill him": Twain
Definition
unwell
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"
killhim
Clue
"I'll learn him or ___": Twain
war
Clue
"God created ___ so that Americans would learn geography" (line attributed to Mark Twain)
evers
Clue
Activist who said "You can kill a man but you can't kill an idea"
slay
Clue
Kill it or just kill
mufasaproblem
Clue
The fact that his brother Scar was trying to kill him, for one
tyson
Clue
He said about an opponent "My main objective is to be professional but to kill him"