have a rough idea of (something)

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have a rough idea of (something)

To have an approximate estimate or general conception about something. There will of course be a lot more details when we get started for real, but you should have a rough idea of the design after looking at these sketches. I completed a similar program a few years ago, so I have a rough idea of what to expect.
See also: have, idea, of, rough
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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