interpose

(verb) be or come between. Example: "An interposing thicket blocked their way."

(verb) introduce. Example: "God interposed death."

(verb) to insert between other elements. Synonyms: interject, come in, put in, throw in, inject. Example: "She interjected clever remarks."

(verb) get involved, so as to alter or hinder an action, or through force or threat of force. Synonyms: intervene, step in, interfere. Example: "Why did the u.s. not intervene earlier in ww ii?."