IPA: /sərˈpraɪzəl/
KK: /sərˈpraɪzəl/
The act of causing someone to feel surprised or the condition of being taken by surprise.
The surprisal of the unexpected news left everyone speechless.
Surprisal is formed from "surprise" (from Old French *surprendre*, meaning to take over or seize) and the suffix "-al" (meaning relating to). The word "surprisal" refers to the act or instance of surprising someone or something.
Think of the act of 'seizing' or 'taking over' ('surprendre') unexpectedly, which helps you remember that 'surprisal' is about the occurrence of a surprise.