outbreak [outbreaks]◼◼◼(an eruption, sudden appearance) noun [UK: ˈaʊt.breɪk] [US: ˈaʊt.ˌbrek]The new agreement included a provision that dealt with the ramifications of the outbreak of a war. = Le nouvel accord comprend une clause qui traite des conséquences du déclenchement d'une guerre.