A dictionary of Confusable Phrases: More Than 10,000 Idioms and Collocations

Note: 
The expression does not correlate in meaning with the
phrase come up with something— think of a plan, solution, an-
swer, etc.: How on earth did you come up with such a brilliant
idea?
go down with something — = come down with something 2:
Our holiday was fine until Jim went down with a bad cold.
come easy to someone • go easy on someone
come easy to someone—(of skills, money, etc.) be mastered or
gained easily without much exertion: She has a natural talent
for learning, and it comes easy to her. Cf.: easy come, easy go —
used to say that smth. you get easily can be lost as easily: Several
recessions taught me that unless you are disciplined about sav-
ing, money is easy come, easy go.
go easy on someone —(coll.) be lenient with a person; not
treat smb. too harshly: Go easy on Ben: he’s only very young
and he tries hard.
Note: 
The expression does not correlate in meaning with the
phrase be easy-going—be not easily annoyed or upset by other
people’s actions: Mrs. Harris wears the pants at home: Mr. Har-
ris is far too quiet and easy-going to argue with her.
come for someone • go for someone
come for someone —(coll.) rush forward with the object of
attacking a person: As I opened the gate a great black dog
came for me.
go for someone —
1
. = come for someone: Our dog went for the
postman again this morning, he’ll get us into trouble. 2. (coll.)
approve of or support a person: Will the voters go for him
now, that’s the point? 3. be relevant to smb.; concern a person:
You must arrive on time or be dismissed — that goes for all
workers.
come for something • go for something
come for something —arrive to collect smth.: You’ve come for
my money, haven’t you! No one can have it!
go for something —
1
. have a liking for smth.: I don’t go for
horror films, and I can’t understand why anyone likes them.
2. be sold for a specified amount of money: The house went
for just over five thousand pounds. 3. attack smth. in words:
The newspapers have really gone for Tom’s new book in a big
way. 4. aim for smth.: The stakes are high, and the question
is whether Hindus intend to go for the big one or settle for
less.