What's "immaculate" mean? And in what context is this word often used?

Native speaker’s answer
Rebecca
"Immaculate" is an adjective meaning perfectly neat, clean, or tidy. It's also sometimes used to mean perfect, especially as a slang word (like in this video here). The speaker has used it here to basically express his very good mood. Ex: Your eyebrows are immaculate. How do you get them so symmetrical? Ex: She cleaned her house constantly, so her floors were always immaculate.