I really dislike Hetalia. It is so popular, but I just can't seem to enjoy it. And yes, I do like history and I do know a lot about it.
Then there is Vampire Knight. I really enjoyed the मांगा until a few months ago, but I have always hated the anime. It's just so... ugh. I don't know how to explain it.
Other than that, I don't really have any least favourites. there are a lot of ऐनीमे that have started out very good (Soul Eater and OHSHC), but I started to dislike after they didn't end like the मांगा at all.
Out of the ones I have seen, probably Shigurui: Death Frenzy. I don't hate it, I actually quite like the art style and realism of it but it took me a while to really get into it. Really, the only characters I liked were Seigen and Iku, other than that, no one else really. The plot was interesting and had so much potential to have a better ending then the crappy one दिया but oh well. Guess I'll have to read the मांगा to find out how Gennoske and Seigen ended up the way they are now.
I really प्यार all ऐनीमे & if I am really bored या something anything ऐनीमे will उत्थान my spirits. I don't think I "hate" any.
There are a couple I don't care for, and stopped watching, so far. I am probably going to get a lot of flack for my answer, but if anyone does, I'm not into debating, so no thanks.
One Piece - (sorry all the OP प्रशंसकों & I know there are many) I mean what is there not to like about cool & sometimes likeable pirates right? Well, that particular दिखाना about it isn't my cup of tea. :( Yeah.
Souleater - Wasn't really into या impressed.
HomeStruck - Is that even an anime? IDK, या really care... Kinda seemed too spazzy for me, lol.
Hetallia - Haven't watched it, but guessing it won't be my thing either, I will check it out before I make a definate opinion.
I lucked out, my first और adult animes were really good या at least had hooked me in and impressed me enough once I gave them a chance. Since then, some others have seemed to pale in comparison. I am picky. (Funny and comical is fine, satirical moments all mixed in are great, but I don't much care for stuff that is very goofy & I प्यार historical~ to me the और about जापान & China and feudalism & Medieval eras/history/or mix, the better) but I am older and my tastes may be different too. Call me weird *shrugs* This is just my tastes.
Well I don't really know many animes that I really, really don't like, since I usually have a fair idea of which ones to avoid, but I have quite a few which I'm not all that keen on.
I know they're both very लोकप्रिय animes, but I just couldn't quite get into नारूटो या One Piece. I don't know why...maybe I didn't give them much of a chance though in fairness, I am pretty picky with animes. I watched one episode of Sailor Moon too; it was entertaining if only for its cheesiness, but I got fed up of it pretty quickly. Likewise Black Cat was entertaining and I still do find it mildly fun to watch at times, but again very cheesy. Lucky तारा, स्टार is also one that I am not so keen on, which is funny as it has been recommended to me several times on account of me liking animes of similar storylines such as Azumanga Daioh; but wheras Azumanga had characters with very different yet identifiable personalities, I sadly couldn't really find any of the Lucky तारा, स्टार characters very appealing and the jokes just seemed a bit weak.