- against
-
I. preposition
Etymology: Middle English, alteration of againes, from again
Date: 13th century
1.
a. in opposition or hostility to <spoke against his enemies> b. contrary to <against the law> c. in competition with <racing against each other> d. as a basis for disapproval of <had nothing against him> 2. a. directly opposite ; facing <she sat down just over against me — Daniel Defoe> b. obsolete exposed to 3. compared or contrasted with <profits are up against last year> 4. a. in preparation or provision for <saving against an uncertain future> b. as a defense or protection from <a shelter against the cold> 5. a. in the direction of and into contact with <knocked against the ropes> b. in contact with <leaning against the wall> 6. in a direction opposite to the motion or course of ; counter to <sail against the wind> 7. a. as a counterbalance to <weighing risk against profit> b. in exchange for <a lower rate against the dollar> c. as a charge on <charged against her account> 8. before the background of <viewed against the sky> II. conjunction Date: 14th century archaic in preparation for the time when <throw on another log of wood against father comes home — Charles Dickens>
New Collegiate Dictionary. 2001.