Correct spelling, explanation: tomorrow is the correct spelling as the word comes from Old English to morgen, later to morrow (meaning to morning). Morrow was spelled with double r and is the reason why the form tomorow is incorrect and the correct one is tomorrow.

Definition of tomorrow:
Definition of tomorrow:
1. noun, the day following today
I can’t go to the party tonight; I have a very important exam tomorrow.
2. noun, not specific but close to future
I can’t afford to buy this car now, maybe tomorrow.

Idioms and phrases with tomorrow
Tomorrow is another day, if something goes wrong now there is still a chance for good times in the future.
Don’t worry about failing that test, you can do better next time. Tomorrow is another day!

Incorrect spelling, explanation: this spelling is incorrect because originally the word was a merge of to morrow meaning to morning (Old English), with morrow spelled with double r. Therefore tomorrow is the only correct form and tomorow is mistaken.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling