undertone

IPA: ˈʌndɝtoʊn

An auditory tone of low pitch or volume.
An implicit message perceived subtly alongside, but not detracting noticeably from, the explicit message conveyed in or by a book, film, verbal dialogue or similar (contrast with overtone); an undercurrent.
A pale colour, or one seen underneath another colour.
A low state of the physical faculties.

Examples of "undertone" in Sentences

Often with a strange kind of undertone, which is supposed to frighten us.
For the green eyes the undertone is a purple tone which CoverGirl has named Black Ruby.
If they’re related, then the undertone is that “you’re not one of us because you’re not in our family.”
He spoke in that quiet deliberate manner, and in that undertone, which is often observable in mechanics who consider and adjust with great nicety.
It's dense, moist, and full of flavor, the pumpkin undertone allows the cinnamon and chocolate chips to compliment each other without overpowering one another.
He's an influence on Coleman's own arcane ways of developing material like dipping into the so-called undertone series, which is basically the natural overtone series turned upside down.