DO NOT CLICK ON THIS..... OR ELSE!!

spelling correctly, even with difficult words

Onomatopoeia.

Hippopotamus.

Munchausen.

Cymotrichous.

Rhombus.

Immigration.

Chauffeur.

Estuary.

Isosceles.

https://aaaspell.com

https://spellingtraining.com

https://grammar.yourdictionary.com/spelling-and-word-lists/spelling-bee-study-words.html

https://www.dummies.com/health/medical-terms-commonly-misspelled/

AND FOR THE LONGEST WORD IN ENGLISH:

pneumonoultramicroscopicsilicovolcanoconiosis

Yeah, that's an actual word. Look it up.

Some more sources: 

https://www.astleycooper.herts.sch.uk/_files/Literacy/496F5A26B7C8147A6BDD9F16168DC3CD.pdf

https://7esl.com/silent-letters/

 Here you go!