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Dad and father are normal in the English language yes. How many times do you hear a 16 year old boy say daddy, not often, the experience might even be absent. Dad and father are the ones that are clearly most used, therefore, those are the normal ones.

So you still refer to people who use different words as not normal. I ask myself what arrogant mindset a person might have who thinks in categories as ‚normal‘ and ‚not normal‘ when it comes to what words have to be used. And let me tell you...the world does not consist only of 16 year old boys who use the word dad or father only. There are even girls or younger boys. Or even something in between. And no...other words for dad or father are not absent. Believe it or not. Probably you won‘t anyway. Good day to you.

Things that are called normal, are the things that are gratefully more common. For example, most people drive forward on the road, that is what the majority does, so we call it normal. If someone drives backwards, well that is possible, but it's not normal. But I see you're conflicting calling something normal or abnormal, with, calling something acceptable or unacceptable, or existing or non existing. Just like a driver driving backwards on the road, that is completely acceptable, but it isn't normal.

So, how should I call it then if the majority of teenagers use Dad and Father ? How should I call that type of action if I can't use the word normal ?