"undermining effect" is a correct and usable phrase in written English.
You can use it to describe the impact that an action or event has on something else, where this impact reduces its effectiveness or ability to function properly. For example: The emergence of fake news has had a severe undermining effect on public trust in the media.
Other safety devices, like bicycle helmets, may have a more subtly undermining effect, at least according to some "risk homeostasis" theorists, who hold that helmets can lead some people, feeling more secure in the knowledge that they're "safe," to ride faster, increasing the potential for accidents, or to ride less often, making them less healthy.
Barnett, Sorensen, Wong, Haug, and Hall (2009) also included a follow-up 4 weeks after removal of the incentive and found no difference between the previously incentivized and the control group, providing no evidence for a persisting undermining effect of the incentive.
For health behaviors that rely on self-control, effective rewards might plausibly enhance perceived competence, making an undermining effect of the reward less likely, and a positive effect on behavior more likely.
The potentially undermining effect of the heavy police presence isn't lost on the mayor.
Despite the undermining effect of his malady Chaliapin remained conscious almost until the end.
Most women want to breastfeed but are thwarted by the lack of this support, compounded by the powerfully undermining effect of formula milk advertising.
Williams maintains that both utilitarianism and Kantian moral theory are deeply implausible because of their integrity undermining effects.
Some courts have stymied test case efforts either by intentionally blocking litigation or by undermining the effect of appellate decisions.
Mr. Obama said the talk of war was driving up oil prices and undermining the effect of the sanctions on Iran.
Mrs. Clinton's supporters said that Mr. Comey's condemnations seemed to make an oblique case for charging her, undermining the effect of his decision.
The present study focuses on the improvement of the efficiency of the traditional cookstove in order to address the most pressing problem of drudgery associated with the firewood fetching activity without undermining its effect on indoor air pollution.
