Incorrect spelling, explanation: tommorrow is a wrong spelling, because the word tomorrow comes from Old English to morgen, on (the) morrow, with morrow meaning morning. Later written as to morrow and finally together: tomorrow. When it became one word in the 20th century, m wasn’t doubled: there was no need to do so.

Correct spelling, explanation: tomorrow is the correct spelling because it comes from Old English to morrow (with morrow meaning morning; hence to the morning). When the phrase was merged into one word, there was no reason to double the m, so the correct form is tomorrow (the same old phrase but written together). Tommorrow is then incorrect.

Definition of tomorrow:
noun, a day after today
We aren’t going to school tomorrow, because of the national holiday.
Have you heard that Jessica and Matt are visiting us tomorrow?

Phrases with tomorrow:
as if there was no tomorrow – acting without thinking of consequence, carpe diem
From time to time we should do something crazy as if there was no tomorrow.
better an egg today than a hen tomorrow – it is better to have something sure now than to wait for something better but unsure
I think it’s great that you got into that school; an egg today is better than a hen tomorrow.
jam tomorrow – a never-fulfilled promise
This company only promises jam tomorrow to new employees.
here today, gone tomorrow – an opportunity that lasts for a very short time
My mom taught me to take every opportunity in life, as it’s here today, gone tomorrow.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling