Infiant 

The feeling before you learn a subject or thing.
Being unknowing or without an understanding of a subject or thing. Usually, this feeling involves feeling stressed, annoyed, or mad.

Once you learn the subject you forget the way it felt before not knowing a single thing.
Basically, the in-between feeling when you're starting to learn something.

"Before I learned Javascript I felt so infiant, as I did not know a single thing about the subject."
"The teacher was going over World War 2... I felt so infiant towards the subject."

Infiant by DAPULSE, LLC January 1, 2018

Infant Annihilator

A boy band for kids and teens with wholesome lyrics, melodic vocals and catchy tunes. Just like One Direction. Their music videos consist mainly of playing in the forest and running at the beach on a sunny afternoon. Recommended for every Belieber who seeks new idols to love.

« My daughter LOVES Infant Annihilator! She always squeals with happiness every time she hears them on the radio! »

Infant Annihilator by Individual of Truth October 19, 2019

Infantryman

A single member of the larger whole that is the Infantry. One who is not only unafraid to fight but fights with a grin on his face.

There is only one job in the modern military and that is that of the Infantryman everyone else is just support.

Infantryman by 11B2P January 13, 2008

Infant Defending 

1. Baby-sitting, but more modern day and less "lame" sounding.

Geoffrey was infant defending Rob last night.

Infant Defending by ThisisaProtocol October 17, 2009

Infant Annihilator

A deathcore band from the UK thats lyrics often depict death, rape, and anti-religious themes. They have two albums, The Palpable Leprosy of Pollution and The Elysian Grandeval Galeriarch, which are available on iTunes.

Have you seen the latest Infant Annihilator memes?

Infant Annihilator by Fuck bitches, get herpes November 26, 2016

Infantilism 

Enjoyment from infant-related things. Pretending to be a baby, wearing diapers (see diaper lover, speaking like a child (ie "I sowwy"), sleeping in a crib. Wide range of things, but all infant-related

Note that this is interest in the trappings/behaviour of youth, not sexual interest in the youth themselves (that's a pedophile)

Infantilism by Anonymous March 20, 2003

Infantile 

To act in a childish or immature manner.

Alex: Today, in class, my friend and I kept laughing then annoyed the teacher. I must do it again soon!
Deeanna: Oh Alex, you're so infantile.
Alex: I know, I can't help it.

Infantile by Significant Auxiliary May 8, 2014