However, there are some suffixes that are used in words related to sleep, such as:
* -somnia: This suffix indicates a sleep disorder, as in insomnia (difficulty sleeping) or narcolepsy (sudden sleep attacks).
* -hypnic: This suffix refers to sleep or sleep-related, as in hypnic jerk (a sudden muscle spasm that occurs as you fall asleep).
* -dorm: This suffix means "sleep" or "sleepiness", as in dormant (inactive or asleep) or dormancy (a state of inactivity or sleep).
So, while there's no single suffix for "sleep", these options are commonly used in words related to sleep and its various states and conditions.