Not that I dislike it but anything like gore or horror because I get scared easily xD cant read/watch stuff without getting nightmares but other than that... Bara, shota and Mech o.o
I guess Yuri maybe cuz I'm a girl but it doesn't fit right for me no prejudice tho just a normal dislike or avoidance at most and for hate maybe horror or psychological ones that leave a great deal of impact
It really depends for me. Though if I had to pick, the genres I hate most are romance and hentai/harem/ecchi. I find that romance always gets in the way of the storyline and the love interests are often really useless. I prefer when the main character focuses on his/her goals instead of romance.
What is the genre you really hate or you dislike?