watertight

"the cans and cannots"

"The prisoners made their escape by digging a tunnel."

"The school's new regulation about cell phone use during class aims to improve student focus. "

"My daughter packed a lunchbox for her school trip. "

"to devise an argument; to devise a machine, or a new system of writing"

"The architect planned the building for the client."

"The contract has been nullified."

"tightly clenched fingers"

"Wellington defeated Napoleon at Waterloo."

"My sister made a delicious ham and cheese sandwich for lunch. "

"The impossible of finishing the project by Friday became a reality when everyone worked late. "

"Marriage is a contract."