Yes, there are definitely ways to determine whether someone genuinely doesn’t like you. The most obvious way of course is they come right out and say it “I don’t like you!”
Other times it can be subtle. E.g. repeatedly turning down your invitation to do something i.e. an invite, refusing to work on a project with you.
Body language is another good sign of someone not liking you. It is often difficult to understand what a body gesture is saying but blatant gestures such as rolling of the eyes, a pout or a frown can indicate that a person doesn’t like you.
We all have something that we call a ‘gut feeling.’ This supposedly comes from our reptilian brain and is designed to protect us. That’s why we don’t eat rocks or play with Komodo Dragons. It is designed to protect us.
If we are getting this nagging feeling in our brain that somebody doesn’t like us, odds are that ancient part of our brain is setting an alarm off for us. Be ware!
I would be remiss if I didn’t add some sage advice from the wisdom of my advanced years. Who cares?
As you journey through life you will find that there are people that you don’t like and as hard as it may seem, there will be people who don’t like you. The secret to happiness may very well be in surrounding yourself with people that you like and in turn like you.
Thanks for your question!