this post was submitted on 22 Sep 2025
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[–] Rhynoplaz@lemmy.world 33 points 2 months ago (1 children)

The inability to process their raw emotions.

When an adult hears disappointing news, they say ok, and think about how they can get a better outcome next time.

A child starts yelling and crying and hitting.

Tell a kid that there's a pizza party later, and they'll want a PIZZA PARTY RIGHT NOW!

Adults are able to wait until later without bouncing off the walls or whining for it to happen now.

[–] chaosCruiser@futurology.today 3 points 2 months ago (3 children)

What about autistic adults who have interests that aren’t necessarily appropriate for their age? Some people consider it childish to be interested in teletubbies, picture books or duplos.

[–] FreshParsnip@lemmy.ca 6 points 2 months ago

I don't think it's childish to like things made for children, I think it's childish to shame people for liking things made for children. I'm in my 30s and have watched several Disney Jr shows all the way through. They're enjoyable as long as you go in with realistic expectations.

[–] TubularTittyFrog@lemmy.world 2 points 1 month ago

that's really just more of a fixation.

[–] Rai@lemmy.dbzer0.com 2 points 2 months ago (2 children)

Yes, it is appropriate to deem something made for children “childish”

[–] Daft_ish@lemmy.dbzer0.com 3 points 1 month ago

The question was about behavior

[–] starlinguk@lemmy.world 3 points 2 months ago (1 children)
[–] Rai@lemmy.dbzer0.com -1 points 1 month ago

That’s the same mothafuckin thing

[–] snooggums@piefed.world 14 points 2 months ago* (last edited 2 months ago) (1 children)

Most people's definition: anything fun and silly because apparently adults aren't supposed to have fun or something

Mine: acting like someone who hasn't learned basic knowledge or developed empathy

[–] NABDad@lemmy.world 9 points 2 months ago (1 children)

I would describe the first one as childlike.

[–] snooggums@piefed.world 4 points 2 months ago (1 children)

Same, but a lot of people treat them as the same thing and only in the negative way.

[–] starlinguk@lemmy.world 1 points 2 months ago

They're wrong.

[–] morphballganon@mtgzone.com 10 points 2 months ago

Instant gratification at long-term expense

Does not include necessary things like food

Nor acts to build or sustain relationships, like making your kid happy

[–] steeznson@lemmy.world 10 points 2 months ago

Behaving in an emotionally disregulated manner, similar to how a child who has not developed as a person would do

[–] jjjalljs@ttrpg.network 8 points 1 month ago (1 children)

Poor emotional regulation. Poor long term planning. Disregarding facts for emotions.

[–] TubularTittyFrog@lemmy.world 2 points 1 month ago* (last edited 1 month ago)

bingo.

the definition of childhood, emotional immaturity etc, is the failure to recognize the world beyond your immediate emotions

growing up is realizing the world exists beyond your immediate needs and feelings.

and it's terrifying when adults lack that ability.

[–] BuboScandiacus@mander.xyz 8 points 2 months ago (1 children)

It's childish if someone bitter tells you it is

So everything is childish

Enjoy life, people

[–] starlinguk@lemmy.world 1 points 2 months ago

You're confusing childish with child-like. Childish always has negative connotations.

[–] Bidah@thelemmy.club 6 points 2 months ago (1 children)

pee pee poo poo

hehehehehe

[–] Daft_ish@lemmy.dbzer0.com 1 points 1 month ago* (last edited 1 month ago)

PJ is that you?

[–] FridaySteve@lemmy.world 6 points 2 months ago (1 children)

I think people use that word to mean immature. Childish implies that a behavior is age-inappropriate, but also implies that the behavior would be appropriate for a child, which is often not true. Immature is a better word to use when someone is doing behaviors that indicate their brain development hasn't caught up with their life situation.

[–] FreshParsnip@lemmy.ca 1 points 2 months ago

It depends on the age of the child and if they can reasonably be expected to know better

[–] Venus_Ziegenfalle@feddit.org 6 points 2 months ago

To me if it's done purely for the attention of others rather than intrinsically motivated it's childish. A general lack of responsibility is also childish. Tamer stuff like trinket collections, lewd jokes, cartoons and whatnot in my opinion is enjoyable independently of age. If anything judging those things as childish could be seen as childish. Who's more obsessed with seeming all grown up than kids?

[–] Libb@piefed.social 5 points 2 months ago (1 children)

In an adult, you mean?

A child is in the process of learning to behave, so I will always grant them a pass on not being able to listen and not being able to control their emotions/reaction. Not so much with any adult person, at least not with anyone who is also demanding to be considered an adult and treated like one. Being an adult is great, but it has a cost which is to stop behaving like a child ;)

[–] nuggie_ss@lemmings.world 0 points 2 months ago

Every adult behaves like a child at some point.

[–] guy@piefed.social 4 points 2 months ago

I can only think of negative emotions where the feeler can't handle them in a controlled way.
E.g. getting angry and screaming and/or hitting things.
For an adult, avoiding childish behaviour when angry would be cursing and at the most, raising ones voice.

This however does not apply to emergencies and such. There will always be room for angry screaming if the situation demands it.

Being a martyr is another example. Having something go against you and proclaiming you are a victim is childish. Grow up and own whatever happened.

[–] Kolanaki@pawb.social 3 points 2 months ago

Lacking maturity. Literally acting like a child, despite knowing better.

[–] UnfortunateShort@lemmy.world 3 points 2 months ago

Stubbornness, shortsightedness, dramatization

[–] sylver_dragon@lemmy.world 2 points 2 months ago* (last edited 2 months ago)

It's caused by the speaker not liking what another person is doing, but being unable to articulate a real argument against the behavior. So, they call it "childish" as a way to express that dislike in a socially acceptable fashion.

[–] FreshParsnip@lemmy.ca 0 points 2 months ago (1 children)

Selfish behaviour that doesn't consider other people's needs

[–] nuggie_ss@lemmings.world 1 points 2 months ago

Really? That's one of the most common behaviors among adults.