i Register
In some senses, eyebrow-raising is marked as idiomatic. Watch for register when choosing this word.
adj
That causes surprise, wonder or disbelief.
Guardiola switched to a 5-5-0 formation in the 76th minute following the eyebrow-raising decision to haul off Haaland and send on defensive midfielder Nico Gonzalez - a tactical manoeuvre which could have come right out of the Jose Mourinho playbook.
noun
An expression of surprise, wonder, or disbelief.
An instance of this.