Step 1: Break down the word Misanthrope.
"Mis-" comes from Greek "misein" meaning "to hate"; "Anthropos" means "human being" or "mankind"; combined: Misanthrope = one who hates or deeply distrusts all of humanity.
Step 2: Distinguish from similar-sounding words.
Philanthropist = "philos" (loving) + "anthropos" = lover of mankind (the exact opposite); Misogynist = hater of women specifically, not all people; Cynic distrusts human motives but does not necessarily hate people.
Step 3: Confirm the answer.
A person who hates mankind is precisely called a Misanthrope.
\[ \boxed{\text{Misanthrope}} \]