People often say someone was a toxic friend or their ex or MIL is toxic. Am I being unreasonable, or is this just another (equally vague) way of saying "bad"? Or am I being dense and there's some specific meaning to it that I'm not seeing?
Like, sometimes people say it and it means something very serious, often that the "toxic" person was verbally abusive. But other times, it just seems like interpersonal disagreements, that the other person isn't irrevocably evil or tainted, you just don't like them. Am I way off-base here?