Likelihood 07 : Chance of something happening, whether defined, measured or estimated objectively or subjectively, or in terms of general descriptors (such as rare, unlikely, almost certain), frequencies or mathematical probabilities
Cabinet Office, Civil Protection Lexicon: A developing single point of reference for UK Civil Protection terminology, Version 1.0, UK 2009. http://webarchive.nationalarchives.gov.uk/+/http:/ /www.cabinetoffice.gov.uk/media/230446/lexicon.pdf , (Emr Mgt - Brit) {19}