How do you describe one's making wrinkles between their eyebrows? [duplicate]
Solution 1:
If specifically referring to the wrinkles themselves, you could use the word, "furrow," as a verb.
furrow
v
- make a rut, groove, or trail in (the ground or the surface of something). "gorges furrowing the deep-sea floor"
- (with reference to the forehead or face) mark or be marked with lines or wrinkles caused by frowning, anxiety, or concentration. "a look of concern furrowed his brow"
https://www.lexico.com/definition/Furrow