To scare the hell out of informal verb phrase
The sound of the alarm scared the hell out of us.
On Halloween, he cosplayed the ghost and scared the hell out of me.
To shake a lot due to the cold or fear
Being so scared, confused, and astonished that you can't think or do anything.
To be surprised by some sudden occurrence
To greatly surprise, shock, or confuse someone
The verb "scare" should be conjugated according to its tense.
If someone has a cast iron stomach, they have a strong stomach that can digest unusual food and even bad food without being ill.
Jimmy must have a cast-iron stomach, when he drank milk with lime juice and felt perfectly fine afterward.