How to enter the word Avicii into the English dictionary?

You can’t, really.
Words get into dictionaries by being used regularly, with a specific meaning attached to it.
So far I think it has never happened that a famous person that committed suicide has gone into a dictionary.
Nobody, as far as I know, has ever said “that guy has really Presleyed himself in the grave”.
Or Cobained, or Monroeed.

The dictionary is supposed to reflect language in current use. You would have to convince a sufficient number of people to use your new word for dictionary makers to make note of it.

Get people to use the term. Dictionaries don’t take contributions like that. The look at how words in normal speech are used (norma loquendi) and pull from there,

So your goal is to get people to use the term enough to catch the attention of the compiler.

For non-Latin scholars, read this

You can submit it to the Urban Dictionary for possible inclusion. You have to define it, though, which includes designating the part of speech.

I have had words and phrases included in Urban Dictionary. Inclusion is dependent on being accepted by other people on line to judge the submission.

Isn’t that already the definition of a masochist or a work-a-holic?

@Pandora.
Avicii’s word is definitely about my life, but I am not a workaholic and not a masochist. Pancreatitis killed him. Yesterday I had a burn of the intestinal tract in the acute stage. There is not enough strength for the treatment regime, there is no money for food and treatment. Perhaps in two days I will be forced to do cement work and after build a path to remission. Although the only thing I would like to save my body as much as possible.
But Life is strange. I think international language need to have word like Avicii.
https://avicii.com

Pretty sure he died by his own hand.

@freguarUK, I’m talking in regards to how you described Avicii. This is however how his parents described him after he took his life. “An over-achieving perfectionist who traveled and worked hard at a pace that led to extreme stress,” the statement reads. “When he stopped touring, he wanted to find a balance in life to be happy and be able to do what he loved most – music. He really struggled with thoughts about Meaning, Life, Happiness. He could not go on any longer. He wanted to find peace.”
He had acute pancreatitis mostly because of his drinking. This probably means he was using alcohol to self-medicate which did to him what happens to a lot of people who drink to self-medicate. It becomes a game of dominos. One by one each falls.

I love his music. I made a Zumba routine to Hey Brother. He was so young. It’s tragic.

I think you have to start using the word and see if it catches on. You have the problem of him not being known widely enough, and people not knowing the circumstances of his death.

For example, my guess is “going postal” was used a lot and understood probably before it made it into dictionaries.

You could try to submit avicci to the urban dictionary, which was suggested above. That might be easier than trying for the Oxford or Webster’s.

Give us a demonstration of the proposed word as used in a sentence.

@HP.
What a pity that I have to sit in the walls of this damned school where they teach me nothing and cause harm. I am sacrificing my youth now by wasting valuable time. Absolute Avicii.

In protest, I danced breakdance in the house of culture where there were several thousand people. People fainted, screamed and sighed. In general, they reacted differently but emotionally. The committee is considering my case. They are trying to charge me with undermining the foundations. Now I regularly have to carry out dirty errands of the head of the department. Oh, Avicii. How can I escape from the USSR right now! How?! Oh Lord, Avicii!

poetic. So avicii is an expletive of despair?

This needs more thought. Specifically, if it’s going to be a verb, how would you conjugate it?

He aviciied? He was aviciing? Future tense – can you avicii in the future?

Noun form: avicination?

What’s the study of aviciism? Aviciiology?

Here’s why I bring this up:

Even as an important and influential person as Einstein doesn’t have such a word. “Hey – I einsteined this afternoon instead of doing my homework”. I have a class on EInsteinism tomorrow afternoon”. – they just don’t work.

This needs more consideration.

Plus, Americans will screw up spelling it. They’ll change it to avichee probably. Not that spelling isn’t a problem anyway in English, so maybe that’s not a big deal.