A yellow smiley-like face with simple, open eyes and no mouth, as if at a loss for words.

Meaning varies widely, but commonly conveys speechlessness, humility, secrecy, and silence. May also convey moderately negative emotions, such as disappointment, frustration, awkwardness, or sadness. 

Samsung’s design previously featured raised eyebrows and blushing cheeks.

Face Without Mouth was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.