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

Note: 
The expression is not antonymous in meaning to the
phrase be a bit gone—(sl.) be crazy or insane: The cook
scratched his head; he had a chat with the overseer afterwards,
and they agreed that the traveler was a bit gone.
go too far —go beyond the limits of what is considered rea-
sonable: If this was an olive branch, Dondolo was tempted to
take it, just because he had gone too far.
See also: go far / go far afield.
be under the cat’s paw • make a cat’s paw of some-
one
be under the cat’s paw —live under the control of some dom-
ineering person: She might claim adulthood in every sense of
the word…. She would no longer be under the cat’s paw of
her stepmother.
make a cat’s paw of someone —make another person a tool or
instrument to accomplish one’s own purpose: She simply made
a cat’s-paw of you, Basil. I can see it now, darling, I did not
then.
be under the delusion • be under the illusion
be under the delusion —
1
. hold a false opinion or belief: Any-
one who is under the delusion that corrupt governments are
only in the Third World has better think again. 2. hold a belief
that may be a symptom of madness: He was charged with
shoplifting but the man was under the delusion that the su-
permarket belonged to him.
be under the illusion — = be under the delusion 
1
: Often our
world is under the illusion that power comes in the form of
money.
be up for something • be up to something
be up for something —
1
. (of a house, car, etc.) intended for
sale or repairs: How long has this house been up for sale? 2.
be considered for a position, a job, etc.: I believe he’s up for
re-admission to the society at the next committee meeting. 3.
facing criminal charges: I hear the gardener is up for the rob-
bery at the big house. 4. (coll.) willing to do smth. or interested
in doing smth.: If you’re up for straight drinking, go to an
izakaya, usually explained as a Japanese pub.