Verb
-
get involved, so as to alter or hinder an action, or through force or threat of force
"Why did the U.S. not intervene earlier in WW II?"
- step in -
to insert between other elements
"She interjected clever remarks"
- come in - put in - throw in -
introduce
"God interposed death"
-
be or come between
"An interposing thicket blocked their way"