Definitions

1. adjective

Resistant to or incapable of being raked or upset.

“The rackproof container was designed to keep its contents secure during transport.”

2. adjective

Not easily upset or disturbed.

“She was a rackproof person, able to remain calm in the face of adversity.”

3. noun

A state or condition of being resistant to raking or upset.

“The rackproofness of the new storage system was a major selling point.”