Meanings
Possibly from the practice of examining the length of horses’ teeth when estimating their ages: an old horse has long, rectangular incisors, and their occlusion angle is steep. Compare don't look a gift horse in the mouth.
How to pronounce "long in the tooth":
US
AU
Old; aged.
Example Sentences
1
He's a talented actor, but he's getting a bit long in the tooth for action movies.
2
I used to love that band when I was younger, but now they seem a bit long in the tooth.
3
She's still a great tennis player, but she's getting long in the tooth to compete at the highest level.
4
I don't think he can handle the physical demands of the job anymore; he's long in the tooth.
5
The car has served me well over the years, but it's starting to feel a bit long in the tooth.
