English Idioms: Watch one’s mouth

English Idioms About “Parts of the body”
Idiom: Watch one’s mouth
Meaning: To be careful about what one says, especially with regard to disrespectful or profane language.
Example: Watch your mouth when you speak to him. He’s the boss.

English Idioms: Loose cannon

English Idioms About “War”
Idiom: Loose cannon
Meaning: The idiom “loose cannon” refers to a person who is unpredictable or uncontrolled and who is likely to cause unintentional damage.
Example: He is considered a loose cannon because he is unable to control himself.

English Idioms: Eat humble pie

English Idioms About “Food”
Idiom: Eat humble pie
Meaning: (Also eat humble crow) said when you admit that you were wrong.
Example: In the begining he boasted that she would get the best grade. But then she was forced to eat humble pie.

English Idioms: Now or never

English Idioms About “Time”
Idiom: Now or never
Meaning: Said when you have to do something right now because you may not get another chance to do it later.
Example: This is your chance. It’s now or never!

English Idioms: Curiosity killed the cat

English Idioms About “Animals”
Idiom: Curiosity killed the cat
Meaning: Curiosity killed the cat is a proverb used to warn someone not to be too curious about something and ask too many questions because this can get you into trouble.
Example: Alan: I wonder who killed that wealthy man? Bill: Curiosity killed the cat.