.
Consequently, what is better good or pretty good?
Good, to an imprecise degree. I wouldn't say it has a flavour of sarcasm, but a flavour of “more or less”. So when you answer “good” then everything is well and truly definitely good but when you say “pretty good” you're just less than sure about the well and truly definitely part. “Pretty good” is more non-committal.
what is another word for pretty good? adequate mediocre. pretty good and adequate. satisfactory mediocre. pretty good and satisfactory.
Subsequently, one may also ask, is pretty good correct grammar?
"I understand English pretty well" is correct. Either way you say it, you will be understood. Of course you don't HAVE to say "pretty well," but correctness often helps accuracy. The problem is that you are modifying understand, a verb, so you should use an adverb, well, rather than the adjective good.
What does it mean when someone says very good?
Very good is used to tell someone in authority that you agree to carry out a suggestion or order.