Submitted by György Chityil ... on Sat, 01/20/2018 - 01:06 Hierarchy: NounDescription: {{obsolete|military}} A surprise attack; a sudden or unexpected assault. {{defdate|16th-19th c.}}Ngram: surprisalNgram Text: surprisalSource: WiktionaryIssue: 0Wiktionary tag: 16th-19th c.Ngram Count: 1