Fixed expressions
Idioms
English fixed expressions — phrases whose meaning isn't obvious from the individual words. Each entry shows the meaning, an example sentence, and its register.
Idioms containing open, including its inflections. Clear word filter
5 idioms
can of worms
CEFR B1a complicated problem that causes trouble the moment it is touched
Informal
Matching variant: open a can of worms
with open arms
CEFR B1with an enthusiastic and affectionate welcome
Neutral
open the floodgates
CEFR B2To remove a restraint and allow something to increase rapidly, often beyond control.
Neutral
Pandora's box
CEFR C1an action or situation that unleashes many unexpected and hard-to-control problems
Neutral
Matching variant: open Pandora's box
open mouth, insert foot
CEFR C1used to describe saying something tactless or embarrassing
Informal