An instance of suggesting a thought to oneself.
An autosuggest feature.
The practice of suggesting thoughts to oneself, as in autohypnosis.
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.
An auditory tone of low pitch or volume.
To accompany as an undertone.
To say or speak in an undertone.
To present as less important, noticeable or prominent.