To faint, lose consciousness
Sentence:
He blacked out after standing too long in the heat.
To base your hopes on something / someone
Sentence:
You should not bank on getting help at the last moment.
To withdraw, concede defeat
Sentence:
After hours of debate, the other team finally backed down.
To move backwards, in fear or dislike
Sentence:
The dog backed away when it saw the stranger.
To take into consideration
Sentence:
The budget does not allow for unnecessary spending.
To have the same opinion as someone else
Sentence:
I agree with your opinion on this matter.
To recommend not doing something
Sentence:
Doctors advise against eating too much junk food.
To make sense, seem reasonable
Sentence:
His explanation does not add up at all.
To explain, give a reason
Sentence:
How do you account for the sudden drop in sales?
To respect or obey a decision, a law or a rule
Sentence:
All employees must abide by the rules of the company.