Select the most appropriate meaning of the given idiom.

Long in the tooth

Too old to do something

The most appropriate meaning of the idiom "long in the tooth" is too old to do something.

This idiom is used to describe someone who is too old to do something, especially something that requires physical or mental agility. It is often used in a humorous way, but it can also be used to express genuine concern about someone's ability to do something.

The other options for the meaning of the idiom are not as accurate.

• Too uncomfortable for words does not typically describe someone's age.
• Too wise for people does not typically describe someone's age.
• Extremely dangerous does not typically describe someone's age.