The phrase "a subtle means to" is correct and usable in written English.
It can be used when describing a method or approach that is not obvious or is delicately executed to achieve a particular goal.
Example: "The artist employed a subtle means to convey deep emotions in her paintings, allowing viewers to interpret the feelings in their own way."
Alternatives: "a nuanced way to" or "a delicate method to".
This SGS model is sensitized to non-equilibrium flows, preserving the anisotropic characteristics of turbulence; this aspect makes it a subtle means to simulate the flow with strong recirculating and separation.
The versatility that results from the ability of the polyene chain to exist in a variety of topologically distinct forms separated by low energetic barriers provides these molecules the ability to adjust topologically to protein constraints and also presents a subtle means to influence the electronic energy levels of the carotenoid.
If your partner is a romantic interest, use flirting as a subtle means to direct your partner's steps and moves.
Institutions that lack the power of the sword must use more subtle means to constrain executives.
Not to mention that the transgressions may involve subtle means to seize slightly more power — for example, changing where polling stations are placed — so, if detected, these transgressions generally would not merit punishment by force.
Asian nations were not overt, but instead used subtle means to discourage U.S. companies from making strong inroads into their markets.
McComb thinks that the meow is present in a normal purr but is very quiet, and some cats learn to exaggerate the sound as a subtle means of commanding attention.
Evolutionarily, MS has been a subtle means by which plants prevent self-pollination and increase genetic diversity (Hanson [1991]).
Such obstruction constitutes a "subtle means of intimidation," the environmental law center argued in a 128-page report called Muzzling Civil Servants: A Threat to Democracy?
If Veeck wanted to demonstrate that the Negro has no place in major league baseball, he could have used no subtler means to establish the point.
The biggest menace we face today -- and all civilized societies face it together -- is not intercontinental ballistic missiles but terrorism, which requires a subtler means of defense.
