Please tell me the definition of this word.

He is a very excellent detective.

He went out in the middle of the night to covertly investigate the incident.

The fixed price of this product is 3000 yen.

There is concern about the fall of the economy.

How long does it take to get to the bus stop?

I commute by local train.

We offer the best service to our customers.

He presented us with a proposal for a new project.

This car can run at low speed.