Do you mean dislike romantically? If so, I really hate to hurt people's feelings....so I won't be blunt and straight-forward but I get really fickle...like not answering texts, bailing out on dates at the last minute, making excuses not to see them. I had a couple of guys that were interested in me but I really just didnt have the guts to tell hurt someone's feelings upfront so I was sort of passive aggressive about everything and over time they sort of got the message that I just didnt like them in a romantic way. I actually hate that I do that.
There's a reason you hate it, even though your intentions are good. Deep down, you know that perhaps it's not the wisest way to handle it. But how then do you go about not hurting these people's feelings?
Analyze your values, and whether what you are doing actually achieves the purpose meant. Often, a few INFPs that don't like conflict, or hurting other people's feelings, will try to retreat or disappear, in an ostrich like manner, hoping that when all is "said and done" the conflict is magically gone, or that the other person "got the message". However, I question whether such "fickleness and "flakiness" actually "helps them" get the message, for in practice it is more hurting and abusive than just telling them you are not interested-are you doing this to safeguard yourself from conflict, or to REALLY not hurt their feelings? Because if you want to avoid hurting others, you'll be polite but will eventually NEED to confront them about what the situation really is, rather than giving out "passive-aggressive" hints that some won't take (my hint: it is usually more hurtful to be left wondering "what's going on?!" than to be told that somebody is not really interested in you; also, people are not supposed to take hints, but to really know why is it that they are being avoided.)
I am not attacking you, but wanted you to understand why is it that whenever there's a choice of not telling somebody the truth so that they won't be "hurt", and disappering to avoid such conflict, the latter is almost always the worse and MOST hurting/rude choice. Nothing will be won-you will be more stressed by your avoidance endeavors, and the other person will be (quite unfairly) kept in the dark (plus in the end, as beautiful a person you must be, it also doesn't make you look good, which I am sure you'll rather avoid.)
We don't have to tell people that we don't like them, of course.
One can be honest while being polite. But is the disappearing/avoidance act really warranted? I don't believe it is a justifiable "INFP trait", even though it seems to happen often with INFPs (most of us really hate conflict.) But instead of running away from the situation, I feel it will be better for everybody involved if we just face our fears, let the person know where do he/she stands (no need to be rude or "fight" to achieve this), and let the chapter end, if it needs to end (rather than keeping the ending open to interpretation, as an unfinished chapter.)
Summary: telling the truth may hurt; avoidance/disappearing acts/flakiness in order for people to get "messages" always hurts more, so the "mission" of "not hurting his/her feelings" is NOT achieved by the second method. So, always go for the first choice, in a polite way-people deserve to know where do they stand, especially in relationship situations.
