Against
Meaning: to change from supporting something to opposing it
Example: A section of his supporters turned against him when they heard his latest speech on immigration. Read on
Meaning: a difficult path to be followed
Example: It is against the grain for me to tackle dishonest people. Read on
Meaning: to be in a tough situation with limited options
Example: The company has its back against the wall and if the employees do not help out now, it will be bankrupt soon. Read on
Meaning: bang head against a brick wall
Example: Trying to keep this place clean and tidy is like hitting my head against a brick wall. Read on
Meaning: effort to do something as soon as possible
Example: The completion of this project was honestly a race against time. The client needed to have filed the documents in the court by today at any cost. Read on
Meaning: things will work out when there is unity amongst those people that are involved in the task
Example: The workers will need to form a union because a house divided against itself cannot stand. Read on
Meaning: in a great hurry to finish something before a particular time
Example: The team was working against the clock to finish the project on time. Read on