stiffening

"After sitting at the desk for hours, my back felt stiffer than usual. "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"He is a very fragile person and gets easily depressed."

"Due to the sheer volume of guests, we had to have two sittings for the meal."

"Asphalt, composed of oil and sand, is a widely used material for roads."

"The weather forecast for today predicts rain and strong winds, so I should bring an umbrella to school. "

"The cold weather made the fabric of the jacket stiffen. "

"The lightning caused thunder."

"The moving company used cardboard boxes to pack all the family's belongings. "

"The artist used a small paintbrush to carefully paint the details of the flower. "

"The complicated instructions on the new software difficult me from completing the project on time. "

"The athlete's strong feature, a broad chest, helped her succeed in the sport. "