Synonym: in opposition to, versus. Antonym: for. Similar words: fight against, struggle against, again, all over again, mainstream, regain, ungainly, in step. Meaning: [əˈgenst; əˈgeɪnst] 
prep.1. in opposition to; contrary to; adverse or hostile to: twenty votes against ten; against reason. 2. in resistance to or defense from: protection against burglars. 3. in an opposite direction to: to ride against the wind. 4. into contact or collision with; toward; upon: The rain beat against the window. 5. in contact with: to lean against the wall. 6. in preparation for; in provision for: money saved against a rainy day. 7. having as background: a design of flowers against a dark wall. 8. in exchange for; as a balance to or debit or charge on: He asked for an advance against his salary. 9. in competition with: a racehorse running against his own record time. 10. in comparison or contrast with: a matter of reason as against emotion. 11. beside; near; before: The car is against the building. 12. over against, in contrast with: the rich over against the poor. conj. 13. Archaic. before; by the time that..
prep.1. in opposition to; contrary to; adverse or hostile to: twenty votes against ten; against reason. 2. in resistance to or defense from: protection against burglars. 3. in an opposite direction to: to ride against the wind. 4. into contact or collision with; toward; upon: The rain beat against the window. 5. in contact with: to lean against the wall. 6. in preparation for; in provision for: money saved against a rainy day. 7. having as background: a design of flowers against a dark wall. 8. in exchange for; as a balance to or debit or charge on: He asked for an advance against his salary. 9. in competition with: a racehorse running against his own record time. 10. in comparison or contrast with: a matter of reason as against emotion. 11. beside; near; before: The car is against the building. 12. over against, in contrast with: the rich over against the poor. conj. 13. Archaic. before; by the time that.. 
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121) There's a lot of contention about that issue - for every person firmly in favour, there's someone fiercely against it.
122) In Sweden it is against the law to hit a child.
123) Against a background of impending famine, heavy fighting took place.
124) There have been seven coup attempts against the beleaguered government.
125) The United States has taken sanctions against Iraq for 10 years.
126) Her testimony works against his chance of success as a politician.
127) The firm is too small to contend against large international companies.
128) I went to the boss to remonstrate against the new rules.
129) She'd made some overseas investments as a hedge against rising inflation in this country.
130) The Social Democratic leader launched a broadside against both monetary and political union.
131) It has been confirmed that Lewis's next fight will be against Bruno.
132) A kid I used to be friends with turned against me after being told that I'd been insulting him.
133) They have found a way to insulate themselves against the cost of inflation.
134) Turkey and Greece were buffer states against the former Soviet Union.
135) They cynically tried to trade off a reduction in the slaughter of dolphins against a resumption of commercial whaling.
136) The pound has hit a new low against the dollar.
137) The Broadcasting Act allows ministers to proscribe any channel that offends against good taste and decency.
138) She fought against racism all her life and died a martyr to the cause.
139) The Republicans have launched a strong counterattack against the Democrats' manifesto.
140) The government wants to take a hard line against the strikers.
141) There has been so much propaganda against smoking that many people have given it up.
142) Small businesses have lobbied hard for/against changes in the tax laws.
143) The government has expressed "deep dismay" at police violence against protesters.
144) They were virtually impotent against the power of the large companies.
145) A number of serious accusations have been made against her.
146) He seemed a bit biased against women in my opinion.
147) The silhouette of the bare tree on the hill was clear against the winter sky.
148) We wanted to buy the chairs but another couple were bidding against us.
149) They discussed the propriety of treating ill children against the wishes of the parents.
150) It is necessary that a person should provide against a raing day.
More similar words: fight against, struggle against, again, all over again, mainstream, regain, ungainly, in step, install, instant, instinct, instruct, instance, instead of, instantly, instructor, instrument, for instance, instruction, installation, institution, constraint, institutional, instructional, maintain, agape, magazine, non-stop, monster, insect.