The Clue Enter unannounced, with "in"
The Answer BARGE
The answer "BARGE" fits the clue because it means to enter a place without permission or warning. The phrase "in" suggests that someone is entering somewhere, and "barge in" is a common expression used to describe this action. It implies a lack of courtesy or consideration for those already present. Therefore, "BARGE" is a perfect match for the clue.