Present participle; Past participle - escalating - escalated Present - escalate - escalate - escalates - escalate - escalate - escalate Past - escalated - escalated - escalated - escalated - escalated - escalated Future - will escalate - will escalate - will escalate - will escalate - will escalate - will escalate Present conditional - would escalate - would escalate - would escalate - would escalate - would escalate - would escalate Present Perfect - have escalated - have escalated - has escalated - have escalated - have escalated - have escalated Past Perfect - had escalated - had escalated - had escalated - had escalated - had escalated - had escalated Future Perfect - will have escalated - will have escalated - will have escalated - will have escalated - will have escalated - will have escalated Past conditional - would have escalated - would have escalated - would have escalated - would have escalated - would have escalated - would have escalated Imperative - - - escalate - - - - - - - -