stagnant

"The motion of the train was slow, taking hours to reach the next town. "

"The dry-stone wall used a large, flat through to support the top stones. "

"My life lacks excitement."

"The school's new economy plan focused on using resources more efficiently. "

"The stillness in the library was perfect for concentrating on my homework. "

"The product is undergoing a change in order to improve it."

"The stale bread was left on the counter, so we didn't eat it for lunch. "

"The freshness of the morning air made the walk to school feel invigorating. "

"An inactive boy, he rarely exercised and preferred to stay indoors."

"The pair loved to take pictures in the decaying hospital on forty-third street."

"Testing for the new antidote is currently in progress."

"The school is located just outside the town, without the main shopping area. "