Which one is irony wit wig or whim?

Irony is a literary device where there is a contrast between what is expected and what actually occurs. Wit is clever and humorous language, often used to make a point or entertain. A wig is a head covering made from human or synthetic hair. A whim is a sudden desire or impulse. Therefore, the correct answer to your question is that irony is the most closely related term to wit, as both involve language and communication, while wig and whim are unrelated in terms of meaning and usage.