What Part of Speech is Tomorrow?

“Tomorrow” is usually an adverb of time or a noun meaning the next day, and the sentence job tells you which.

If you’ve ever stared at a worksheet and thought, “Wait… what is tomorrow here?” you’re not alone. The word can slide into more than one role, and it does it so smoothly that it trips up smart readers.

This guide gives you a clean way to label it each time. You’ll see the common roles, quick checks you can run in seconds, and lots of short sentence samples you can copy into your notes.

It’s quick, clear, and repeatable.

How “Tomorrow” Behaves In Real Sentences

Parts of speech describe how a word works in a sentence, not what the word “is” forever. So the same spelling can switch labels when its job changes. “Tomorrow” is a classic case.

The table below shows the roles you’ll meet most often, along with a fast clue that helps you decide.

Use Of “Tomorrow”	Most Common Label	Fast Clue
Answers “When?” (time)	Adverb	It modifies a verb: leave tomorrow
Names a day	Noun	It can take an article: the tomorrow (rare)
Subject of a sentence	Noun	It can do the subject job: Tomorrow is busy
Object after a verb or preposition	Noun	It follows a verb/prep: plan for tomorrow
Before a noun as a time label	Adjective (school label) / Noun adjunct	It sits right before a noun: tomorrow morning
With ’s to show possession	Noun (possessive)	It takes ’s: tomorrow’s schedule
Title of a book, film, or song	Proper noun	It’s a name, so it’s capitalized: Tomorrow
Set phrase meaning “the near time ahead”	Noun	It acts like a thing: build a better tomorrow

In daily grammar work, the answer is: it’s most often an adverb of time (“when?”) or a noun (a day you can name). The rest of the time, it plays a modifier role right before a noun, which many classes label as an adjective.

So when someone asks, “what part of speech is tomorrow?” the best reply is tied to a sentence, not a dictionary line. Grab the sentence, find the job, then pick the label.

Quick Tests That Settle The Label Fast

You don’t need to guess. Use these small checks to lock in the part of speech with confidence.

Swap Test

Replace “tomorrow” with the next day. If the sentence still works and “the next day” is acting like a noun phrase, you’re in noun territory. If it feels like it’s answering “when,” you’re in adverb territory.

Question Test

Ask a question about the verb. If “tomorrow” answers When? it’s working as an adverb. If it answers What? or Which day? it’s working as a noun.

Move Test

Many time adverbs can move around without breaking the sentence. Try shifting “tomorrow” to the front. If it still reads clean, that points toward adverb use.

Article And Plural Test

Nouns can take articles (a, an, the) and can pair with plural markers in related forms (tomorrows). If those options feel natural in your sentence, you’re treating it as a noun.

How Teachers Usually Want It Labeled

Different classes use slightly different label sets. Some worksheets only offer “noun” and “adverb.” Others add “adjective” for the modifier spot in “tomorrow morning.” If your options are limited, pick the closest match from the choices on the page.

A safe classroom rule is this: if “tomorrow” modifies a verb, write adverb. If it fills a noun slot (subject, object, object of a preposition), write noun. If it sits right before a noun and gives that noun a time label, many teachers accept adjective.

Adverb And Noun Roles Side By Side

When you compare the two main roles, the pattern gets clearer. The adverb role is tied to an action. The noun role is tied to a thing you can name, point to in a sentence, or replace with a noun phrase.

Try these quick swaps:

If you can swap “tomorrow” with then or later, that leans adverb.
If you can swap it with Tuesday or next day, that leans noun.
If you can add the before it without the sentence falling apart, that leans noun.

Comma Choices When “Tomorrow” Starts The Sentence

When “tomorrow” is at the front, you’ll often see a comma after it: “Tomorrow, we start early.” That comma signals a short opening time word. In short, direct sentences, writers sometimes skip the comma: “Tomorrow we start early.”

On school work, follow the punctuation style your teacher or rubric expects. If your class treats opening time words as introductory elements, use the comma and move on.

What Part Of Speech Is Tomorrow When It Marks Time

When “tomorrow” tells you when an action happens, it modifies the verb phrase. That’s the classic adverb-of-time job.

Common Adverb Patterns

These patterns show up in school writing, texts, and speech. Read each one and notice which word “tomorrow” leans on.

Verb + tomorrow: We leave tomorrow.
Tomorrow + clause: Tomorrow, we leave.
Auxiliary + verb + tomorrow: We will leave tomorrow.
Negative + tomorrow: I can’t go tomorrow.

Adverb Sentence Samples You Can Label

Try labeling “tomorrow” in these sentences. Each one answers “when?” about the action.

Text me tomorrow.
The teacher will grade the quizzes tomorrow.
Tomorrow, the buses run on a late schedule.
We’re meeting tomorrow after practice.
They fly out tomorrow morning.

“Tomorrow” As A Noun In Plain English

As a noun, “tomorrow” names a day, the same way “Monday” names a day. It can act as a subject, object, or object of a preposition.

You’ll often spot noun use when the sentence treats “tomorrow” like a thing you can plan, fear, choose, or shape.

Noun Sentence Samples You Can Label

Tomorrow is a new chance.
I can’t wait for tomorrow.
We have a test tomorrow, so tonight is study time.
She saved the call for tomorrow.
They talked about tomorrow during dinner.

Dictionary Labels And What They Mean

Most major dictionaries list “tomorrow” as both a noun and an adverb, which matches how it behaves in real writing. You can see the dual labeling in the Merriam-Webster entry for tomorrow and the Cambridge Dictionary entry for tomorrow.

Still, dictionaries don’t label your sentence for you. They show what roles exist. Your job is to pick the role the word is doing right now in your sentence.

“Tomorrow” Before A Noun

In phrases like “tomorrow morning” or “tomorrow night,” the word sits right in front of a noun. Many school materials call that an adjective, since it modifies the noun “morning” or “night” by giving a time label.

Some grammar books call it a noun adjunct instead, since “tomorrow” still feels like a noun that’s being used to label another noun. Either way, your teacher may accept “adjective” as the classroom label, since it matches the position and function in the phrase.

Modifier Samples

Bring your form to tomorrow class.
We’ll finish this in tomorrow’s session.
Tomorrow afternoon works for me.
The tomorrow deadline moved again.

“Tomorrow” In Possessives And Plurals

When you see tomorrow’s, the base word is still a noun. The ’s form shows possession or close connection: “tomorrow’s plan,” “tomorrow’s weather,” “tomorrow’s homework.” It works like other possessive nouns: “Monday’s quiz,” “the team’s coach.”

You may also see the plural tomorrows in writing about repeated days or hopes across time: “They worried about their tomorrows.” Plural marking is a strong noun signal, so it can help when you’re unsure.

Proper Noun Use In Titles

If “Tomorrow” is the name of a work, event, or project, it’s a proper noun and is capitalized. Titles can sit in many sentence slots, so check the capitalization and the context: “I watched Tomorrow last night.” In that sentence, the word is a proper noun, though the spelling matches the time word.

Tricky Spots That Cause Most Mistakes

Most errors come from rushing the label without checking the sentence job. These are the spots that cause the most mix-ups.

When “Tomorrow” Is The Subject

In “Tomorrow is busy,” the word is the subject, so it’s a noun. The fact that it refers to time doesn’t force the “adverb” label. The job matters more than the topic.

When It’s Part Of A Time Phrase

In “tomorrow morning,” some students label “tomorrow” as an adverb because it feels like time. In that phrase, it’s not modifying a verb. It’s attached to a noun, so “adjective” (or noun adjunct) fits better.

When It’s After A Preposition

In “for tomorrow” or “by tomorrow,” the word is the object of a preposition, so it behaves like a noun. Prepositions take noun-like objects.

Fast Checklist For Homework And Exams

If you’re stuck on a quiz, run this checklist in order. It takes less than a minute.

Find the main verb in the clause.
Ask what “tomorrow” answers about that verb: when, what, which day.
Check the position: after the verb, at the front of the clause, or right before a noun.
Try the swap “the next day.” See if it behaves like a noun phrase.
Pick the simplest label your class uses: adverb, noun, or adjective.

Practice Set: Label It Yourself

Label “tomorrow” in each sentence as adverb, noun, or adjective (modifier). Write your label first, then check the answers below.

We’ll talk tomorrow.
Tomorrow feels packed with errands.
He moved the meeting to tomorrow.
Tomorrow morning is the only slot I have.
She hopes tomorrow brings better news.
Put the files in the tomorrow folder.
They left tomorrow’s agenda on the desk.
Tomorrow, the library opens late.

Answers With Quick Reasons

Use the job in the sentence as your proof, not a gut feeling.

Sentence Number	Label	Why It Fits
1	Adverb	Answers “when?” about talk
2	Noun	Subject of the sentence
3	Noun	Object after preposition to
4	Adjective / modifier	Modifies the noun morning
5	Noun	Direct object of hopes in meaning (“hopes for tomorrow”)
6	Adjective / modifier	Labels the noun folder
7	Noun (possessive)	Possessive noun modifying agenda
8	Adverb	Fronted time adverb for the clause

What Part of Speech is Tomorrow?

Now you can answer the question in a way that gets full credit: “Tomorrow” is an adverb when it tells when something happens, a noun when it names a day, and a modifier when it sits right before a noun.

If you still feel stuck, write the sentence out, circle the verb, and ask what “tomorrow” is doing right there. That small move clears up most confusion fast.

One last check: if you’re writing the phrase what part of speech is tomorrow? in notes, add a sentence right under it. Without a sentence, the label is always “it depends,” and that’s not a satisfying answer.