can't help (something)

to not be able to control or stop something.

A lot of kids daydream in school. They just can't help it.

Usage notes: sometimes used in the form can't help but do something:

I couldn't help but notice that the table is a bit wobbly.

• cast net wide
• cast net wider
• cast off
• cast off something
• cast pearls before swine
• cast your eye over
• cast your eye over something
• cast your lot with
• cast your lot with someone
• cast your lot with something
• cast your mind back
• cast your net wide
• cast your net wider
• cat and mouse game
• catch 22
• catch as catch can
• catch-as-catch-can
• catch breath
• catch cold
• catch dead to rights
• catch death!
• catch death of cold!
• catch eye
• catch hell
• catch in the act