I am looking for a verb with the meaning of ceasing to like something/someone.
To dislike is not fitting here, as it means the opposite of like, not going back from liking something to having a neutral opinion about it.
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It only takes a minute to sign up.Sign up to join this community
The transitive multi word verb (traditionally 'phrasal verb') go off works in informal contexts:
go off 1. [phrasal verb] B2
If you go off someone or something, you stop liking them. [British, informal]
- "Why have they gone off him now?"—"It could be something he said." [verb + particle + noun]
- I started to go off the idea. [verb + particle + noun]
Although many synonyms are given by Collins, Merriam-Webster and Thesaurus.com, for example, for other senses of 'go off' (depart / explode / sound / take place / go bad), many of them single words, none are offered for this sense. And while Macmillan does mention some ... I'll class them as 'related words', none indicates the fall from favour.
to stop liking or being interested in (something)
It's tagged in that dictionary as "US", and it's probably more common in US English, but as a UK speaker I would certainly understand it.
I immediately thought of grow out of [something], defined by Cambridge as:
to stop having an interest in something or stop doing something as you become older:
He wants to be a rapper, but I think he'll grow out of it.
Outgrow is used synonymously.
We don't have negative feelings for the things we grow out of, but we don't have the passion that used to be there either — there's usually only nostalgia.
I am going to throw a very short British oddball since it has not been mentioned and I am Tired/Jaded.
"Tire of" (not to be confused with Tyre off) in British English , is a frequent saying indicating a lack of older interest.
to become bored with someone or something, or to stop enjoying an activity: This is the kind of toy that kids will soon tire of. He never tires of (= he enjoys) playing games on his computer.
For a single word try very obtuse Satiate but that's usually used for "no longer a need for" such as, satisfied an appetite for something.
To lose interest is to stop finding something interesting. It implies that something previously held your attention (in a positive way) for awhile, but not any longer. It's a fairly neutral way to stop liking something, not implying that you now dislike it, just that it's no longer of interest to you. Several of the other answers here suggest a somewhat more negative view of the thing you stopped liking (that you now actively dislike it), but losing interest typically connotes a shift from a positive view to a neutral, rather than negative, view.
+1 to RigaoMinota's "disenchanted"; I would suggest cooled as a lesser degree of change in attitude and cooling the actual process.
to lose ardor or passion
His anger cooled.
IMO, "disenchanted" implies that the person in question started, well, "enchanted"; to my mind, "cooled" doesn't bring that implication.
Might I suggest pall
To become tired of, wearied by.
his humour began to pall on us
He found that his retirement hobbies began to pall after a couple of years.
It isn't as pointed as dislike, but it does hint at a repetition that no longer satisfies like it once did.