Mostly; very nearly. We're pretty much finished—just a few last-minute tweaks to the code. Support for the bill has been pretty much unanimous.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Almost, nearly, approximately, as in Our homework was pretty much finished. This adverbial usage differs from the use of pretty for "considerable" (as in pretty penny). [c. 1800]
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.
pretty ˈmuch/ˈwell(British English also pretty ˈnearly) (American English also pretty ˈnear) (spoken) almost; just about: This nightclub is pretty much the best this town can offer. ♢ I’m pretty well disgusted by your behaviour. ♢ It’s worth pretty near a thousand dollars.
Farlex Partner Idioms Dictionary © Farlex 2017
For the most part; mostly: "The ... matter was pretty much dying down" (John Strahinich).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.