Words similar to keys

Example sentences for: keys

How can you use “keys” in a sentence? Here are some example sentences to help you improve your vocabulary:

Every word in the novel plunks the tinkly piano keys of a dime novel.
The clerk laughed and said the keys to those trucks were lost."
On mine, nestled among some control keys on the right side is what is called a “number pad,” which resembles the key arrangement one sees on an adding machine or calculator; on the left side is a double bank of five keys marked F1 through F10 which, when pressed alone or in combination with another key, perform certain functions, some of which are useful, others of which are evidently thought useful by the manufacturer but which I never use.
What are the keys to the game?"
3. Classifications support annotation using the elements of the classification (classes and instances) as keys.