To Butt In, to Talk Over Someone
Puzzle 14 of Science Fair Projects Piece of Cake Pack
Question is: To Butt In, to Talk Over Someone
and the answer is: INTERRUPT
Word Meaning:
INTERRUPT — (ambitransitive) To disturb or halt (an ongoing process or action, or the person performing it) by interfering suddenly, especially by speaking.
Definitions from Wiktionary.