Decepticon 

a mixed word that is created from two words. ie,
Deceptive and Con artist
Deceiving and Conniving

synonym; shapeshifter, phoney, fake, fraud

That phoney decepticon is a manipulative, back stabber.

Decepticon by SeeThroughMASKS May 12, 2021

Decepticon 

Someone that thinks they're a gender but obviously they're not.

"Transgenders gay dudes in disguise"
"Transgenders that's a bunch of guys" that's a decepticon bro.

Decepticon by Handful of sin November 4, 2022

Decepticon 

A woman who looks very attractive from behind, but when she turns around she's disappointingly ugly.

A decepticon can also refer to an older women who dresses much younger than she should in order to trick men into checking her out. This method of deception only works at a distance.

Guy #1: "Hey look at that hot chick sitting at the bar."
Guy #2: "Just be careful, she might be a decepticon."

Decepticon by AceWoody November 2, 2011

Decepticon 

An insult. You call a person a decepticon if you they have done something nasty to you or they have are not allowing you to do something.Used as a substitue for the word evil .

'dont be a Decepticon'

' ugh ur such a Decepticon'

Decepticon by Autobot Ninja October 2, 2009

Decepticon 

An empty can of beer that is mistaken for a full one.

"Hey bro, where's my beer, I just opened it?"

"It's on the table."

"Nope, not this one, it's a decepticon."

Decepticon by DeltaRooster August 10, 2012

decepticon 

girls who purposely lead on guys for the sake of shits and giggles. They always hint things to you and then as soon as you get think you like them and she likes you they step on your balls and disappear into thin air. It's usually a lame month long ordeal, possibly even longer.

So Carrie called me and told me to come over because her parents were out of town. I got there and no one was even home, so I called and she said there was an "emergency". She's such a decepticon.

decepticon by ohhhLeThaL November 30, 2006

Decepticon 

A term used to describe someone who looks more/less attractive on an online profile than in person. A deception.

Guy 1: I kinda like her ya know
Guy 2: Don't be fooled dear friend. She a Decepticon.
Guy 1: Ah man. Thanks for having my back bro

*High Fives All Round*

Decepticon by Dudgey Boo-boo August 10, 2015