to turn your head so that you don`t look at someone or something formal to move a part of your body down, especially your head, around your eyes or face away from something, that you don`t want to see to move your head down first, then up, to answer ”yes” to a question or to show that you accept, approve or understand to move your head down, then go up in a brief quick move as a type of welcome from someone or show consent or respect How to be obvious from some of the examples above is to confirm a wink in the absence of any small sign or other. Rather, it could mean (or be interpreted as) ”Don`t believe me, I`m duplicated,” or even ”be careful, it`s dangerous.” In other words, a wink might not indicate an agreement, or conversely, it might actually indicate an agreement, but it might not be interpreted in this way. Context, knowledge of the other person and body language are all here! to cover or hide your face with something, for example, to avoid looking at someone who quickly moves their head up, especially if you`re angry or don`t care about something, to move your head so that people can`t see your face, for example, because you`re upset about moving your head down and up to say hello, goodbye, thank you, etc. to move your hand or head in a certain direction, for example, to show somewhere or to get someone`s attention, to quickly lower your head or your head and body, to move under something or to avoid being touched. to move your head up and back with a sharp strong motion, for example, when you start laughing to turn your head or someone`s body or something, so you no longer look at them to move your head slightly up, down, or a face However, your description of ”Nodding with their eyes/eyes” sounds like a blink of an eye. A wink can certainly be used to indicate ”You are in my secret,” and would often be accompanied by the most subtle head heads as a reference to tacit concordance. I think you will notice that, in most cases, a person ”blinking in agreement or acquiescing with his eyes or eyelids” is quite difficult to interpret as a ”yes or a clear no.” So it`s no surprise that we don`t have a single word for that. If you say that someone has acquiesced, it means that they bow their heads and lift them up to signify their approval without having to say anything.