Correct spelling, explanation: the origin of the word boredom is bore, which comes from Germanic languages. Later boredom was adopted by Old English too, but it had the form of borian. Before boredom got the form that we use today, it had been changing over the centuries. Today, boredom is a widely used noun.

Definition of boredom:
1. noun – when you are bored,
A holiday with my parents is nothing but boredom so I can’t wait to come back home to my friends.

Collocations with boredom:
A few common collocations with boredom include: sheer boredom, utter boredom, and relieve the boredom.
Out of sheer boredom I started to clean my house and now it really looks spotless.
When my husband is at work for long hours I have the impression that I will die out of utter boredom.
In order to relieve the boredom while running try listening to your favorite music.

Incorrect spelling, explanation: boredom is a troublesome word when it comes to its pronunciation as for many users the word doesn’t look or sound English. As a result, they consider boredom as a word of an exotic origin and they misspell it as bordum, which is incorrect.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling