What does "throw someone under the bus" mean?

To blame or sacrifice someone else to protect yourself from criticism or consequences. If your colleague makes a mistake and you tell your boss it was entirely their fault (even if you were involved), you've thrown them under the bus. The image behind the phrase is vivid and brutal: you are pushing someone into the path of a moving vehicle so that it hits them instead of you. That mental picture is exactly why the expression carries such weight. It describes a moment where one person is deliberately left to take the damage while another walks away clean.

It implies deliberate betrayal. You've chosen your own safety over loyalty to someone. It's one of the more serious things you can accuse someone of in a professional setting. Calling someone out for this is a strong statement, so use it carefully. If you say "he threw me under the bus" in a meeting, you are effectively accusing a person of betraying you in front of others, and that is not a comment people forget quickly.

• "When things went wrong, he threw his whole team under the bus."
• "I'm not going to throw her under the bus, we both made mistakes."
• "That was a real under-the-bus moment."
• "The manager threw the intern under the bus to save his own reputation."
• "Don't throw me under the bus just because you missed the deadline."

The person acting knows what they're doing. It's not an accident, it's a choice to sacrifice someone for personal gain. This is the key difference between simply making an honest mistake and throwing someone under the bus. The betrayal is intentional. Someone who genuinely didn't realise their words would harm a colleague has not thrown that colleague under the bus, even if the result looks similar.

Learners sometimes use this phrase for any situation where someone gets blamed, including honest misunderstandings. Remember that the expression requires intent and self protection. If your boss simply disagrees with you, that is not throwing you under the bus. Save it for the moments when someone actively shifts blame onto another person to save themselves.

Picture yourself and a friend standing at a bus stop. The bus is coming, and to avoid getting hit, you push your friend into its path. That single shove is the whole idiom. Whenever you hear the phrase, imagine that push, and you'll instantly remember it means sacrificing someone to protect yourself.

• "Blame someone else to cover yourself" is a plain description
• "Sell someone out" is informal and similar in meaning
• "Shift the blame onto someone" is neutral and describes the action
• "Stab someone in the back" is a similar betrayal, but more about hidden actions
• "Hang someone out to dry" is close, meaning to leave someone to face trouble alone

The phrase is used freely on both sides of the Atlantic and means the same thing in each. It became especially popular in American workplace and political language, and it spread widely through news and television. British speakers use it just as comfortably now, so you can say it confidently whether you are talking to colleagues in London or New York.

Casual to professional. Very common in workplace discussions about politics and blame. It works well in an office conversation about who took responsibility for a failed project, and it also fits casual chat with friends about a reality show contestant who betrayed their alliance. Because it is an idiom, avoid it in very formal writing such as legal documents or academic essays, where "shift the blame" would sound more appropriate.