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good and something
very or completely something. (Something is a state of being.) Joe never does anything till he's good and ready. Mary's good and mad, all right.
Very, as in I'll go when I'm good and ready, or Mike was good and mad at Tom. This phrase is used to intensify the words that follow. [Colloquial; early 1800s]
Informal Very; thoroughly: I'll do it when I'm good and ready.