Talk to an expert from Relationship Hero for personalized relationship advice

Beware of people who exhibit 12 insincere behaviors

Disclosure: this page may contain affiliate links to select partners. We receive a commission should you choose to make a purchase after clicking on them. Read our affiliate disclosure.

These 12 behaviors indicate insincerity.

Two women are sitting at a desk in an office. One, with gray hair and glasses, is speaking, while the other, with long dark hair, listens intently, holding a pen. Papers and a laptop are on the desk in front of them. Shelves are in the background.
©Image license via Depositphotos

Although most of us intuit insincerity from people, we can sometimes second-guess our responses because we don’t trust our own instincts. If you’re ever in doubt, beware of those who exhibit the behaviors below. They’re rarely sincere, and often used for the sake of self-benefit.

1. Excessive praise and flattery.

Two men in dress shirts sit at a bar counter. One faces the camera with a smile and gesturing hands, while the other, seen from behind, holds a glass of beer. Bottles are visible on the shelf in the background.
©Image license via Depositphotos

Some people use effusive, over-enthusiastic praise for small children who show off their artwork as a way of encouraging them. But beware if they use a similar tone to behave like sycophants with those whose favor they want to earn, such as high-ranking members of society. According to Psychology Today, it’s a common tactic used for personal benefit or to gain control.

2. Smiling with their mouths, but not their eyes.

A man with short brown hair and a beard is standing in front of a dark gray background. He is wearing a white dress shirt and a black tie, and he is smiling while using both his hands to push his cheeks upward.
©Image license via Depositphotos

You may be surprised to discover that children as young as four or five can discern fake smiles from real ones because of the microexpressions and muscles used to create them. Watch for people who smile without eye or eyebrow movement (and whose smiles drop in an instant) as this implies insincerity.

3. Agreeing with everything people around them say.

Three people wearing nametags are engaged in conversation while holding coffee cups. One man in a suit is sipping his drink, while two women are smiling. They appear to be at a professional event or conference.
©Image license via Depositphotos

It’s difficult to have any faith in a person who doesn’t seem to have their own opinions or stances on any given subject. It’s even worse when they simply agree with whatever other people around them are saying — especially if they agree with contradictory ideas when surrounded by other groups. Simply Psychology suggests that this excessive type of “mirroring” is a common tactic used by narcissists to manipulate their victims. And whilst we’re not suggesting every insincere person is a narcissist, the manipulation approach is the same.

4. Overly effusive laughter when someone says something funny.

A group of people clinking wine glasses in a celebratory toast. A woman in a red dress is laughing joyfully. The setting appears to be a social gathering or party, with others visible in the background.
©Image license via Depositphotos

Fake laughter always seems forced, and laughter that is disproportionate to what a person said is usually pandering, insincere behavior. Although tittering or overenthusiastic laughter sometimes happens when a person is nervous or anxious, it can also be a sign of groveling, toadying behavior that’s meant to garner favor.

5. Faking interest in a subject.

Two women are having an animated conversation outside a modern glass building. The woman on the left gestures expressively with a smile, while the woman on the right listens attentively, her back facing the camera.
©Image license via Depositphotos

“OMG that’s SO INTERESTING, tell me more!”

People who insist that they’re super interested in a subject they’ve never been concerned with before are either being patronizing, or indulging someone else for their own benefit. You can tell whether someone is responding sincerely or not, so be wary of those who fake their enthusiasm.

6. Having a selective memory.

Two men sit on a leather couch engaged in conversation, each holding a mug. One wears a maroon shirt and holds a mug with a flag design, while the other wears a light blue shirt with a plain mug, gesturing with his free hand.
©Image license via Depositphotos

It’s amazing how some people can remember every single detail of the wrongs others have done to them, but conveniently forget their own trespasses. You can have much more faith in people who own up to their missteps than those who gloss over them, yet use your own transgressions against you.

7. Name-dropping for the sake of associated status.

Two women sit on a gray couch having a conversation in a bright living room. The woman on the left, with braided hair and wearing a pink sweater, looks contemplative. The woman on the right, with curly hair and wearing a brown sweater, gestures expressively.
©Image license via Depositphotos

There are few things as off-putting as those who randomly comment about the celebrity “friends” they supposedly have, to impress those around them. They often do this to make people think they have greater social status or wealth than was originally assumed. So if someone starts dropping names, be on guard; this person is not genuine.

8. Weaponizing their victimhood for sympathy and attention.

A woman with short dark hair in a blue shirt comforts a woman with long hair in a yellow sweater who appears sad. They are seated indoors, with a plant and light blue wall in the background.
©Image license via Depositphotos

Everyone has their personal struggles, but some people use theirs as a means to garner sympathy and attention from others, as well as potential labor, gifts, and special allowances. In fact, research has shown that people who often signal their victim status are more likely to lie and cheat for personal gain.

Some also do this to evade responsibility or punishment for poor behavior, using their trauma or diagnoses as excuses when confronted.

9. Being overly flirtatious to get what they want.

A woman in a white shirt and green jacket smiles while holding an orange coffee cup, standing by a window. She is engaged in conversation with a man wearing glasses holding a white cup. Bright, indoor setting with plants in the background.
©Image license via Depositphotos

Insincere people are often flirtatious with those they aren’t actually attracted to if it means they’ll get their way. If enticing someone might lead to monetary or other personal gain, they’ll flirt without any intention of following through on their suggestions.

10. Offering backhanded compliments.

Two men are sitting at a table in a bright room, engaged in conversation. One is wearing glasses and an orange shirt under a light jacket, and the other is in a yellow hoodie. A laptop and a plant are on the table.
©Image license via Depositphotos

Backhanded compliments may initially seem kind, but always have a sour note associated with them. An insincere person might tell someone that they look amazing “for their age”, or that it’s amazing that they’re so confident “for their height”, leaving the recipient wondering what was actually meant by the so-called compliment.

11. “Bulking up” the stories they tell with lies.

Two women sitting at a wooden table in a cozy cafe. One woman is animatedly talking with her hands raised, while the other listens attentively, holding her phone. Warm lighting and modern decor create a welcoming atmosphere.
©Image license via Depositphotos

There’s a common trope about fishing in which a person catches a small fish and then insists it was a 20lb behemoth, but it can apply to any situation. If you spend time with a person who consistently embellishes their stories (when you know the truth), keep your distance from them.

12. Being critical under the guise of being concerned.

Two people sit at a table with glasses of white wine, engaged in conversation. A Christmas tree with lights is visible in the background. They both wear sweaters and appear to be enjoying a festive meal.
©Image license via Depositphotos

These are the people who will criticize someone else’s choices in partners, wardrobe, makeup, or any other aspect of their life. If they’re reprimanded for overstepping boundaries, they’ll act hurt and offended. They will say they’re “just trying to help” or they’re “concerned for your well-being” to try and excuse their behavior and put the blame on you. Don’t let them.

About The Author

Catherine Winter is an herbalist, INTJ empath, narcissistic abuse survivor, and PTSD warrior currently based in Quebec's Laurentian mountains. In an informal role as confidant and guide, Catherine has helped countless people work through difficult times in their lives and relationships, including divorce, ageing and death journeys, grief, abuse, and trauma recovery, as they navigate their individual paths towards healing and personal peace.