Ο υπεύθυνος ορόφου εκκενώνει τον όροφο.

The floor warden evacuates the floor.

Breakdown of Ο υπεύθυνος ορόφου εκκενώνει τον όροφο.

• ο όροφος: the floor
• εκκενώνω: to evacuate
• ο υπεύθυνος ορόφου: the floor warden

Questions & Answers about Ο υπεύθυνος ορόφου εκκενώνει τον όροφο.

Why is ορόφου used after υπεύθυνος instead of όροφος?

Because ορόφου is in the genitive case. In this sentence, υπεύθυνος ορόφου means the person responsible for the floor or the floor supervisor/warden.

Greek often uses the genitive where English uses of:

• ο υπεύθυνος ορόφου = the person in charge of the floor
• literally: the responsible one of the floor

So όροφος is the basic dictionary form, but after υπεύθυνος you need the genitive: ορόφου.

Why is there no article before ορόφου?

Greek does not always repeat the article in expressions like this.
Here, ορόφου functions closely with υπεύθυνος to make a title-like phrase:

• ο υπεύθυνος ορόφου

This is very natural in Greek. It works a bit like:

• director of sales
• head of department
• floor manager

You could think of it as a compact job-title structure. The article appears before the main noun υπεύθυνος, not necessarily before the genitive noun that follows.

Why do I see both ορόφου and όροφο in the same sentence?