verb
Meaning 1
To join (often as an observer, supervisor or outsider) a group working together on a task.
Definition source: English Wiktionary via Wiktextract
Usage: idiomatic
Examples
- I'll have to sit in with the interviews for the deputy manager position.
- She sat in with one of his group counseling session.
Meaning relationships
Synonyms: none provided
Antonyms: none provided