Nice to Your Face, Toxic Behind Your Back: 7 Narcissistic Behaviours
Have you ever met someone who seems incredibly warm, supportive, and kind—at least when you’re standing right in front of them? They compliment you, smile, and make you feel valued. But later, you hear a very different story. The same person who praised you moments ago is now criticising, questioning, or even undermining you behind your back.
This confusing contrast is not just coincidence. It is a pattern commonly associated with narcissistic behaviour. While not everyone who gossips is a narcissist, this specific mix of charm in public and criticism in private is a strong red flag. Understanding these behaviours can help you recognise them early and protect your peace.
Below are seven common narcissistic behaviours that reveal this “two-faced” dynamic.
A Narcissists Handbook: The ultimate guide to understanding and overcoming narcissistic and emotional abuse.
1. Sweet in Person, Critical Afterwards
One of the most obvious signs is the immediate shift in tone. In person, they may say things like, “You look amazing,” or “It’s so good to see you.” Their energy feels warm and welcoming.
But as soon as the person leaves, the compliments disappear. They might roll their eyes, laugh, or begin pointing out flaws. What seemed like genuine kindness was often just performance—designed to maintain a positive image rather than reflect their true thoughts.
2. Planting Doubt About Someone’s Character
Rather than openly attacking someone, narcissistic individuals often use subtle language to damage reputations. After being perfectly pleasant face-to-face, they might later say, “I don’t know… something feels off about them,” or “I’m not sure they’re as nice as they seem.”
These comments are intentionally vague. They don’t provide clear evidence, but they plant seeds of doubt. Over time, this can influence how others perceive the person, all while the narcissist appears calm, reasonable, and even thoughtful.

3. Creating Suspicion
Another common tactic is positioning themselves as someone who is “just looking out for you.” They might say, “Just be careful around them,” or “Watch your back with that one.”
At first glance, this can seem protective. But in reality, it creates unnecessary suspicion and tension. It subtly shifts trust away from the targeted person and toward the narcissist, who appears to be the one offering guidance or warning.
4. Judging Other People’s Choices
Narcissistic individuals often feel entitled to critique decisions that have nothing to do with them. Whether it’s someone’s career path, relationship, or lifestyle, they may quietly judge and discuss it behind closed doors.
What makes this behaviour particularly toxic is the lack of accountability. They rarely express these opinions directly to the person involved. Instead, they share them with others, creating a narrative that positions them as superior or more informed.
5. Sharing Other People’s Business
Private information becomes social currency. Something told in confidence can quickly turn into a story shared with multiple people.
This isn’t always framed as malicious. It may sound like concern: “I feel bad for them, but…” followed by details that were never meant to be public. In reality, this behaviour often serves to draw attention, gain sympathy, or create a sense of importance.
Over time, it erodes trust—not just for the person being talked about, but for anyone who realises their own private matters could be treated the same way.
6. Subtle Put-Downs
Not all criticism is obvious. In fact, some of the most harmful comments are disguised as casual observations.
For example: “They say they wake up early every day… but I’ve seen otherwise,” or “They’re doing well, I guess—but who really knows?” These remarks may seem small, but they slowly chip away at someone’s credibility.
Because they are indirect, they are harder to challenge. If confronted, the narcissist can easily deny any negative intent, making the other person seem overly sensitive.
7. Presenting Themselves as the Victim
Perhaps the most manipulative behaviour is reframing criticism as kindness. Instead of openly speaking negatively, they might say, “I’ve tried so hard to be nice to them,” or “I don’t know why they treat me this way.”
This creates a powerful illusion. The narcissist appears patient, generous, and misunderstood, while the other person is subtly cast as difficult or ungrateful. It shifts sympathy toward the narcissist and reinforces their carefully constructed image.
Why This Behaviour Happens
At the core of these behaviours is a strong desire to control how others perceive them. Narcissistic individuals often prioritise their public image above authenticity. Being seen as kind, supportive, or trustworthy is essential to maintaining their social standing.
At the same time, criticism behind closed doors allows them to elevate themselves by diminishing others. It creates a sense of superiority without risking direct confrontation or accountability.
This duality—charm in public, criticism in private—is what makes the behaviour so confusing and, at times, emotionally draining for those around them.
How to Respond
Recognising the pattern is the first step. If you notice someone frequently speaking negatively about others when they’re not present, it’s worth paying attention. This behaviour rarely exists in isolation.
Here are a few ways to protect yourself:
- Be mindful of what you share: If someone regularly gossips, assume your information may not stay private.
- Observe consistency: Notice whether their words match their actions across different situations.
- Avoid engaging in gossip: Not participating can help you maintain integrity and distance from the behaviour.
- Set boundaries: You don’t have to listen to or validate conversations that feel uncomfortable or unfair.
Final Thoughts
One of the clearest signs of narcissistic behaviour is the contrast between how someone acts in public and how they speak in private. Kindness that only exists when it can be seen is often not genuine kindness at all.
If someone regularly criticises others behind their backs, it’s important to remember: this pattern doesn’t stop with other people. There’s a strong chance the same conversations happen when you’re not in the room.
Awareness isn’t about becoming suspicious of everyone—it’s about recognising patterns that protect your trust, your boundaries, and your well-being.
Check these out!
Behind The Mask: The Rise Of A Narcissist
15 Rules To Deal With Narcissistic People.: How To Stay Sane And Break The Chain.
A Narcissists Handbook: The ultimate guide to understanding and overcoming narcissistic and emotional abuse.
Boundaries with Narcissists: Safeguarding Emotional, Psychological, and Physical Independence.
Healing from Narcissistic Abuse: A Guided Journal for Recovery and Empowerment: Reclaim Your Identity, Build Self-Esteem, and Embrace a Brighter Future
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Elizabeth Shaw is not a Doctor or a therapist. She is a mother of five, a blogger, a survivor of narcissistic abuse, and a life coach, She always recommends you get the support you feel comfortable and happy with. Finding the right support for you. Elizabeth has partnered with BetterHelp (Sponsored.) where you will be matched with a licensed councillor, who specialises in recovery from this kind of abuse.










