scare the pants off
To scare or startle someone thoroughly.
He liked the water rides, but the big roller-coaster scared the pants off him.
ADJ
major, terrible
The terrible scare last night made everyone in the neighborhood lock their doors.
minor | bomb | food, health | Aids, BSE, etc.
VERB + SCARE
cause
give sb
When the car suddenly stopped in front of us, it gave everyone quite a scare.
get, have
SCARE + NOUN
story, tactics
The horror movie told a scare story that kept us awake all night.
PREP
~ about/over
There was a big scare about the safety of the new children's toy last month.
PHRASES
a bit of a/quite a scare
My daughter gave me quite a scare when she didn't come home after school.
ADV
really
easily
My younger sister scares easily, so we never show her horror movies.
VERB + SCARE
try to
PREP
into
The loud noise scared the children into running back to their parents.
with
His sudden appearance in the dark hallway scared me with its unexpectedness.
PHRASES
scare sb silly/stiff/to death
That horror movie scared my little brother to death last night.
scare the hell/life/living daylights out of sb
That sudden noise scared the living daylights out of everyone in the room.
scare the pants off sb
That horror movie scared the pants off my little brother last night.