countereffect

This seems like it could have the countereffect of helping Obama.

New McCain Ad: "Putting Country First" On Energy Policy 2009

I spent the evening seeking a cure in good conversation, liquids, and Doctor Who reruns; they proved a marvelous countereffect to the effects of fleeing gators.

Weekend, part one: panther reserves, the Florida Trail, and not tripping over alligators mariness 2007

If you take that much, you can still countereffect the effects of things like osteoporosis by taking additional calcium.

CNN Transcript May 17, 2002 2002

But if you supplement the vitamin D with calcium, it should countereffect the likelihood of getting osteoporosis.

CNN Transcript May 17, 2002 2002

However, there's a countereffect: vegetation promotes thickening of the soil, which over centuries adds weight and loosens the grip of root systems on bedrock.

The Liquid Earth 1999

However, there's a countereffect: vegetation promotes thickening of the soil, which over centuries adds weight and loosens the grip of root systems on bedrock.

The Liquid Earth 1999

The interplay between the estrogens (or androgens) and the various pituitary gonadotrophins is exceedingly complex; the HO THE HUMAN BRAIN network of effect and countereffect has not yet been entirely worked out.

The Human Brain Asimov, Isaac 1963

Because it’s assumed that Ahmedinejad’s allies will try to cheat — see, for instance, this report about a religious edict blessing electoral fraud — the more people vote, the stronger the countereffect from Moussavi’s backers will be.

Iran: Curb Your Enthusiasm | ATTACKERMAN 2009