waterproof

"He successfully climbed the mountain."

"The new policy, surprisingly, unaffected the students' daily routines. "

"The preparation for the history test took her several hours. "

"The incapable student struggled to complete even the simplest assignments. "

"The scientist carefully examined the substance to determine its chemical composition. "

"My sister is very helpful, especially when it comes to organizing things. "

"The student was a strong resistant, leading the group in their peaceful protest against the unfair school rules. "

"I waterproofed my boots before hiking in the rain. "

"The man was completely impervious to the deception we were trying."

"The shot rendered her immobile."

"Her belief in her best friend's honesty was unassailable, even when faced with strong evidence to the contrary. "

"The teacher threw a challenge to the students: "Who can solve this difficult math problem?" "