Hoary (adjective)

1. Gray or white with age; old and venerable; ancient; having a gray or white beard or hair.
2. Stale or trite due to overuse or repetition; hackneyed.

Origin:

The word "hoary" comes from the old english word "hār" meaning gray or white hair.

Examples:

1. The hoary old man had a long white beard.
2. The hoary mountains were covered in snow.
3. The hoary cliche "a penny saved is a penny earned" is one of the oldest sayings in the English language.
4. The hoary debate over gun control has been ongoing for decades.
5. The hoary joke fell flat and the audience groaned in response.