1
- the person or people who; any person who谁; 无论谁：
whoever wins should be guaranteed an Olympic place.
谁胜谁就将稳获奥运会参赛名额。
1.1
- regardless of who不论谁, 不管什么人：
come out, whoever you are.
不管你是谁, 给我出来。
- used for emphasis instead of 'who' in questions, typically expressing surprise or confusion到底是谁, 究竟是谁（尤用于表达惊讶或困惑）：
whoever would want to make up something like that?
究竟会是谁想捏造出那种事来？
USAGE
In the emphatic use （whoever does he think he is?） whoever is also written as two words. See usage at HOWEVER.