The phrase "a tapering off" is correct and usable in written English.
It can be used to describe a gradual decrease or decline in intensity, quantity, or quality over time.
Example: "The project saw a tapering off of enthusiasm as the deadline approached, leading to a lack of motivation among team members."
Alternatives: "a decline" or "a gradual reduction".
Cheika wouldn't have seriously viewed the USA match as a player form guide; he'd run his players ragged in training without a tapering off period.
By 2012, it's clear that all I have to look forward to is a tapering off in the growth of new cells, and an increased risk of reproductive cancers.
These ideas predict that asexual populations will show a tapering off in fitness gain under directional selection compared with sexual populations as beneficial mutations are not as effectively unlinked from increasingly detrimental backgrounds.
He notes that smartphone purchases have slowed in recent months compared with November, and much of that can be traced to a tapering off in Android adoption.
Prices have soared until this spring, and though this summer saw a tapering off of the hysteria, prices are still high.
At best, coming good will consist of a tapering off of violence, and a crab-wise movement towards a political accommodation between the governments elected under Western supervision and the militias now fighting them.
The active crowd normally ends with a tapering-off period, which is sometimes preceded by a stage of siege.
Even without a tapering-off of economic growth, corporate profits would probably disappoint.
In Wunderink's study, patients were randomly assigned to either maintenance on antipsychotic drugs or a tapering-off and discontinuation of the drugs.
In the latter, patients are allocated to either MBCT while continuing medical treatment, or to MBCT in combination with a tapering-off regimen of the medical treatment (a parallel-group, randomized controlled non-inferiority trial).
Dense atmospheric haze also produces an easily observable solar aureole, apparent as a very bright region immediately surrounding the Sun, with a gradual tapering off of brightness with an increasing angle from the Sun.
