to continue doing something even though it is difficult (even though it is difficult/hard but continue doing ; doesn’t it mean that he/she tries to cope with it ???) -I know it’s hard but stick with it, and you’ll get there in the end. (the beginning of the example is identical with our example-sentence.
stick it to sb American, informal
to treat someone unfairly
-They really stick it to you when they realise you’re a foreigner.
to limit yourself to doing or using one particular thing and not change to anything else
-I’m sticking to my original plan.
-The others were all drinking champagne but I stuck to orange juice.
Could you stick to the point please? (= only talk about what you are supposed to talk about)
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stick with sth informal
to do or use something as you had planned and not change to something else
-I think we’d better stick with our original plan.
stick with sb informal
to stay close to someone
-Stick with me and you won’t get lost. [usually an order]
if something that someone says sticks with you, you remember it
-One piece of advice she gave me has stuck with me ever since.
I am very sorry, but I ‘ve just realized that two of my letters had been deleted.
The first I asked Sanata that what was her opinion about that stick with it can be replace cope with it.-it had been deleted.
After not Sanata answered but Beeezeees what it is there.
The second was: (I answered that ) “You are right, and I am very sorry but I have mistaken.”- it had been deleted also.
As the phrase was there : "it’s hard, but you have to do it" I should control what means really this: "stick with it "
stick with it = even though it is difficult you have to do it.
cope with it = to deal successfully with sth difficult.