undertone

باللغة العربية: نَبْرَة خافِتَة، مَعْنًى ضِمْنِيّ، لَوْن تَحْتِيّ

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

الجمع undertones