1. to seize control of a vehicle, aircraft, or ship by force, typically to divert it to an unintended destination
2. to take over or redirect something (such as a conversation, process, or account) without permission or authorization
Usage: informal

Examples

• The pilot reported that armed individuals attempted to hijack the plane.
• Hackers hijack email accounts to send spam messages.
• She hijacks every meeting to talk about her own projects.
• The group hijacks social media posts to promote their agenda.
• Malware hijacks your browser and redirects you to unwanted websites.
• He hijacks the conversation whenever politics comes up.