Based on/Based off, Break up/Break down, Write up/Write down, Up for/Down for, Went on/Went off, Slow up/Slow down
These all retain similar meanings when substituting with antonyms.
This would be the opposite to switching-in an antonym to contrast the distinct meanings of an auto-antonym. For example,
Bolt on/Bolt off, Clip on/Clip off, Dust on/Dust off