unruffle
verbEtymology From un- + ruffle.
1
To remove ruffles from; to make smooth.
2
To calm or soothe (a person).
3
To calm down.
- [The old man] stood grinning like a gnome, obviously delighted to watch me flush and ruffle and then gradually unflush and unruffle.2000, Robert Grant, The Gift of Lack: Short Stories and Other Writings, page 73: