step in

phrasal verb·1 sense·particle in

Meanings

1

Become involved in a difficult situation to help

Why “in”? You reach a place and become present there. The train gets in, you check in, or the news comes in.

Police stepped in to break up the fight.
Police became involved to help break up the fight.
The teacher stepped in when the boys argued.
The teacher became involved to help when the boys argued.

Don't confuse with

step instep up

Step in means join a difficult situation to help. Step up means increase effort or speed.

Test yourself

Police stepped in to break up the fight. What does it mean?

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