Achy (adjective)

1. Painful or sore, especially in the muscles or joints.
2. Feeling discomfort or unease.

Origin:

The origin of the word "achy" is uncertain, but it is believed to be a shortened version of the word "ache" which has been in use since the 14th century, meaning "to suffer pain".

Examples:

1. His back was achy from lifting heavy boxes.
2. She felt achy all over after the long hike.
3. Her head ached and her throat was sore.
4. His achy knees prevented him from playing sports.
5. She felt achy and weak after the flu.