Definition

A key that is used to open a latch or lock, particularly for an outside door.

Example

She always carries her latchkey so she can get into the house after school.

Conversation

Did you remember to take your latchkey before leaving?

Oh no, I completely forgot it on the table!

You might want to go back for it; it’s the only way to get in later.

Good point! I’ll grab it before I head out again.

Synonyms & Antonyms

Root Explanation

Latchkey → The word is formed from "latch" (from Old English *læccan*, meaning to catch or seize) and "key" (from Old English *cæg*, meaning a device for opening a lock). A latchkey is a key used to open a latch, allowing access to a locked door.

Memory Tip

Think of a 'catching' mechanism ('latch') that needs a 'device for opening' ('key') to gain entry. This helps you remember that a latchkey is a key for opening a latch.

Visually Confused Words