كابوس

جثام

قابوس

εφιάλτης

mauvais rêve

brutto sogno

From Classical Syriac ܟܒܘܫܐ (kāḇōšā). Arabised into the common root ك ب س (k b s), which is related to pressing, squeezing, etc.

Practice speaking and memorizing "كابوس" and many other words and sentences in Arabic.