Step in
2 meanings · select one to explore
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Meaning 1 of 3
Definition
To get involved in a situation to help or to take someone's place
Example sentence
When the teacher got sick, another teacher stepped in.
Real video usage
Three clips showing this meaning in natural speech.
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Common collocations
Natural word pairings to memorize.
Common pattern: step in + to (verb) / for (someone)
step in to help
step in for someone
step in at the last minute
step in and take over
Separable usage
Can the object split the verb? Compare correct vs incorrect.
A substitute stepped in for the sick teacher. ✅ (Correct)
A substitute stepped the sick teacher in for. ❌ (Incorrect — "in for" stays together, before the object)