My boss said we need to 'do a deep dive' - what does that mean?

What it means: A thorough, detailed investigation into a topic. If your boss wants a "deep dive," they want more than a quick overview - they want you to look into something properly, understand it fully, and usually come back with findings or recommendations.

Why natives say this: Business tends to move quickly and people often have only surface-level knowledge of things. A "deep dive" signals that this time, the approach needs to be rigorous. The underwater image is intentional - you're going below the surface to see what's really there.

What it usually involves: Research, data analysis, stakeholder interviews, or detailed documentation, depending on context.

• "A thorough analysis" - more formal, same idea
• "A detailed look at" - neutral and clear
• "Dig into this properly" - informal verb form
• "Investigate this in depth" - academic register

As a verb: You'll also hear "let's deep-dive into this" - it's become a verb as well as a noun.

Register: Business and professional. Very common in presentations, project kickoffs, and strategy meetings. Increasingly heard in journalism too.

Tags: business English, corporate jargon, research, analysis