Your own State Department refers to them less subtly.

The song "Garden of Light" by Isis, a post-metal band, refers subtly to the Hashashin recruitment procedure.

Still, Vertical subtly refers to the fact that Japanese characters are written and read vertically rather than horizontally.

Through her teeth, she proclaims that he was "never a good man", subtly referring to the time he raped her back in the second season.

The décor in coral and aqua refers subtly to the sea, but the menu makes a bolder statement, adding a $10 surcharge to the $55 prix-fixe for meat dishes.

The painting subtly refers to the "two sides of the brain," Mr. Wilmerding explained, playing the sensual and the physical off the intellectual.

And she worried that he had been subtly referring to her own visitor of the evening, Barnabas Collins!

At best they were there for decoration and at worst as "band aids as the musicians subtly referred to them as.

"Aetate", which means "age", is understood and can, as in this case, subtly refer to a person's estate.

No, when the King spoke of potential enemies, he was subtly referring to those enemies Duke Kalas might face from within, particularly from St. Precious.