it takes getting used to

it takes (some) getting used to

It takes time to become familiar with or habituated to someone or something, perhaps due to their unpleasant nature. I know it takes getting used to the boss's unpredictable nature. I love being in England, but it takes some getting used to driving on the other side of the road! Is she getting used to her new job?
See also: get, take, used

It takes (some) getting used to.

It is very unpleasant at first, but after a time it will not be so bothersome. (Said in recognition of the unpleasantness of something.) I never ate raw oysters before. It takes some getting used to. These hot Mexican dishes seem impossible at first. They take some getting used to, I agree. But it's worth it.
See also: get, take, used

it takes getting used to

One needs to become accustomed to something. For example, We've always had a small car, so driving a big van like this-well, it takes getting used to . This idiom employs used to in the sense of "accustomed to," a usage dating from the first half of the 1500s.
See also: get, take, used