look up any word, like thot:
 
1.
a grown man who is very immature, therefore considered a man child.
Dude you need to grow up and stop being such a man child
by rhoni March 06, 2005
 
2.
An adult male who still posesses psychological traits of a child. Traits include, but are not necessarily limited to:
- whining
- pettyness
- trying to pass the blame for their own underdeveloped judgement
- not "stepping up to the plate" when it's their role to.
- secretly still finds 3rd grade bathroom humor amusing.
- is able to connect with his children, but only as another child, not as a father.
- not to mention an overall insecurity in who he is as a man, from which similar traits sprout.

The manchild, if married, is often found married to Type A women (usually firstborn or only child in their own family) who reluctantly yet aptly take up the slack for the aforementioned manchild.

This manchild will often attempt to augment their lack and/or compete with peers with material posessions such as:
- Harley Davidson Softtail with $30 do-rag
- Hummer H2 or similar oversized fossil-fuel guzzling behemoth
- 6 seat felt poker table with matching humidor
- The very latest electronic gadgets (digital camera, GPS handheld, etc.) to impress peers with.
These examples reflect some of the psychological traits mentioned above, and some that aren't:

Ray from "Everybody Loves Raymond"
Doug from "King of Queens"
Dad from "Malcolm in the Middle"
George Costanza from "Seinfeld"
Al from "Married with Children"
by Rex Cavendish May 19, 2005
 
3.
A man child is a male who is over the age of 25, who still lives as though he is a juvenile. Many man-children are not gainfully employed, and survive off of the financial support of their enabling parents. Heavy video-game addiction to fantasy games such as World of Warcraft are key to the man-child.
"You'll never believe it, but that 30-year old uber-gamer man child who lives door to me finally got a job!"
by MarcusI December 18, 2007
 
4.
A Man Child is a fully-grown male that acts like a baby. A Man Child usually whines, complains, and thinks everything is unfair. Man Children in the workplace can be recognized as one who is always complaining about the rules and/or shows too much emotion ex. Crying.
"He was just crying at his desk, what a man child!"
by DeeFab430 July 29, 2009
 
5.
A male who is "of age" but still has the emotional/mental capacity of a child.

Completely incapable of making decisions regarding women, "manning up" when appropriate or discussing anything maturely, manchildren are becoming increasingly more frequent.

Manchildren will have notable traits such as thinking that they are somewhat different to other men because they have no emotional baggage, will find most immature humour widely entertaining and will have not been in a serious relationship, EVER. Longest relationship will be between 1-3 months.

When discussing important things, a man child will look at the floor and remain silent, pretend nothing is wrong at the time and then once out of sight drop into radio silence or will give you the "rabbit caught in the headlights" look.

However, man children are tempting challenge for women and more often than not an older women will take a man child under her wing as he will be impressed with her "at ease and coolness" and she will be taken back at his emotional naivety.

A man child is very easy to train in the ways of the bedroom.
"I was trying to talk about where the relationship with Tom is going and he acted fine but I haven't heard from him since. He's such a manchild!"

"Dave has no clue how to handle this situation, he's such a man child"

"Look at that fittie! Pity, I bet he's a man child"
by Blondie636 October 15, 2011
 
6.
A child who outwardly appears like an adult -- conventionally this means a full grown male that acts immaturely, or pursues childish interests. For example, it's acceptable to play games like World of Warcraft, but it's generally unacceptable to spend twelve hours a day doing so and/or attending conventions.

Manchildren, of course, are not limited to gamers. There are many types and variants of 'not-quite-men, but look-like-men.'
Dude, I swear that manchild's a furry or something.

You know the guy, always lies about getting laid and wears that Tasmanian Devil tie.
by BBBS June 12, 2007
 
7.
A full grown man, over the age of 20, who still needs to be spported finacially or emotionally by his parents. May or may not live at home with parents, but needs consistant reassurement. Is unable to have healthy relationships with women because of childish behavior, but is in desperate need of someone. May or maynot be a fanboy or gamer.
-"hey mom, i know you took me to peter's house yesterday, but he is going to watch logan's run and i haven't seen it in 12 years. oh, and i might bring his sister back here for dinner, but don't make the liver and onions."
-"John, take the goddamn bus and stop being such a man child."
by Aimerwillardilson October 05, 2008