Whatever is a slang term meaning "whatever you say", "I don't care what you say" or "what will be will be". The term is used either to dismiss a previous statement and express indifference or in affirmation of a previous statement as "whatever will be will be".

Is whatever a rude word?

Yes, it's rude. "Whatever" expresses indifference; often, expressing indifference is dismissive, and in this case, it's dismissive of what the other person has to say. Semantically, it's equivalent to responding with "I don't care".

What's another word for whatever?

In this page you can discover 14 synonyms, antonyms, idiomatic expressions, and related words for whatever, like: whatsoever, anything, no-matter-what, whether, everything, any, wherever, what, as-long-as, whenever and whoever.