Inspector Cutting in Massively?

The Inspector interrupts Birling 'cutting through, massively'. The omniscient Inspector is used by Priestley to further convey his views on collective / social responsibility. The Inspector is used very effectively to highlight the corruption and the selfish attitudes of the Edwardian society.

What does cutting through massively mean?

The adverbs associated with the Inspector are very important: he speaks 'carefully, weightily', which gives his words authority; he cuts through the Birlings 'massively' which shows his power over them and his refusal to be intimidated by their social class.

Why does the inspector interrupt Mr Birling?

This interruption shows that Mr Birling is afraid that his daughter is going to get them into trouble by saying too much. This makes the audience dislike Mr Birling further. He is shown to be a man who will try to avoid taking responsibility for his actions.