preposition
in opposition to (someone or something)
in competition with (someone or something)
used to indicate the person or thing that is affected or harmed by something
not agreeing with or allowed by (something, such as a law)
not helping or favoring (someone)
as a reason for disliking (someone or something)
used to say that one thing is being compared with another
as a defense or protection from (something)
in preparation for (something)
used to describe hitting or touching something or someone
in a direction opposite to the movement of (something)
with the background of (something)
as a charge on (something)
as against
over against
up against
US