1. an increase in the intensity or seriousness of something, especially a conflict or disagreement
2. a rapid increase in amount, extent, or intensity

Examples

• The escalation of the trade dispute worried investors.
• Military leaders tried to prevent further escalation of the conflict.
• There has been a dramatic escalation in housing prices this year.
• The escalation of violence in the region prompted international intervention.
• Company officials are concerned about the escalation of production costs.
• The escalation clause in the contract protects against inflation.
• Diplomatic efforts focused on preventing escalation between the two countries.