What's "swell" mean?
Native speaker’s answer
Rebecca
"Swell" is an adjective that means "fantastic" or "very good." It can also be a verb for something to grow and become bigger, usually a body part due to an injury. Here, she's being sarcastic and saying that something is very good when it isn't good at all for her. Ex: Oh, swell. My ex is coming to the party tonight. Ex: My leg is swollen from a sports injury.