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, to, used
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

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, to, used
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

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, to, used
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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