IPA: /ˈsliːplaɪk/
KK: /ˈslipˌlaɪk/
Having qualities or characteristics that are similar to sleep.
The room had a sleeplike atmosphere, making it perfect for relaxation.
Sleeplike → It is formed from "sleep" (from Old English *slæpan*, meaning to rest or be in a state of sleep) and "-like" (meaning resembling or similar to). The word "sleeplike" describes something that resembles or is similar to sleep.
Think of something that is 'similar to' ('-like') a state of 'rest' ('sleep') — that's why sleeplike means resembling sleep.