Tai Form Japanese: How to Say Want To with たい

Picture this. You are sitting in a small Tokyo cafe, and someone at the next table is drinking a matcha latte that looks incredible. You want to order the same thing, but the words freeze in your mouth. How do you actually say "I want to drink that" in Japanese?

That was me, years ago, pointing at menus like a tourist. The moment the たい (tai) form clicked, ordering, planning trips, and telling people what I actually wanted stopped being scary. It is one of the first grammar points that makes you sound like a person with real wishes instead of a walking textbook.

Short answer: the tai form means "want to do" an action. Take a verb's ます form, drop ます, and add たい. 食たべます becomes 食たべたい ("I want to eat"). After that, たい behaves like an i-adjective, so the negative is 食たべたくない ("I don't want to eat").

Table of Contents

• What the tai form means
• How to make the tai form
• Tai form conjugation chart
• Tai form with を or が
• Asking what someone wants to do
• Talking about what other people want
• Tai form examples for daily conversation
• Softening it and going casual

What the tai form means

The tai form, written たい, attaches to a verb to say "want to do" that action. The key word is action. It is for things you do, not things you own.

Here is the feeling behind it. Compare these two:

日本にほんに行いきます。
Nihon ni ikimasu.
I will go to Japan. (a plain fact)

日本にほんに行いきたいです。
Nihon ni ikitai desu.
I want to go to Japan. (a personal wish)

The second one tells the listener something about you, not just your schedule. That emotional layer is exactly why たい is worth getting comfortable with. If the English sentence is "want a thing" rather than "want to do," you need 欲ほしい instead, which we cover in the たい vs 欲しい guide.

How to make the tai form

Two steps, and that is genuinely all there is to it.

ます form → drop ます → add たい

The one thing beginners get wrong here is leaving ます attached. Drop it completely before adding たい.

✗ 食たべますたいです
✓ 食たべたいです

If forming the ます stem still feels shaky, the ます form guide and verb stem guide are worth a quick detour first, because everything here builds on that stem.

Tai form conjugation chart

This is the part that makes たい so powerful. Once a verb becomes たい, it stops acting like a verb and starts acting like an i-adjective. So you already know how to conjugate it.

Notice the verb part never changes again. 食たべ stays put, and only the たい ending shifts, exactly like 高たかい → 高たかくない → 高たかかった. A common slip is treating it like a noun and adding じゃない:

✗ 食たべたいじゃないです
✓ 食たべたくないです

Tai form with を or が

This trips up a lot of learners because older textbooks state it as a hard rule, and it is not one. With the tai form, both を and が are correct before the object. They just carry a slightly different feel.

So do not let anyone tell you 寿司が食べたい is wrong. It is natural and common. If you just want one safe default, use を, because it matches the normal object marker you already use for verbs, and reach for が when you want to spotlight the thing you are craving.

Where you do need to be careful is 欲しい, which is a different word for wanting objects. It takes が, not を:

✗ 水みずを欲ほしいです
✓ 水みずが欲ほしいです

Asking what someone wants to do

The tai form works beautifully in questions when you are asking someone directly.

何なにを食たべたいですか。
Nani o tabetai desu ka.
What do you want to eat?

今度こんどの週末しゅうまつ、何なにをしたいですか。
Kondo no shuumatsu, nani o shitai desu ka.
What do you want to do this weekend?

You will use these constantly when you are making plans with friends, which is honestly where most real Japanese practice happens.

Talking about what other people want

Here is a subtle one that even confident learners miss. Japanese tends to avoid flatly declaring another person's inner feelings with たい, because you cannot actually see inside their head. When you report what someone else seems to want, switch to たがっている.

Keep たい for yourself and for direct questions. Use たがっている when you are on the outside looking in.

✗ 彼かれは帰かえりたいです。 (sounds like you read his mind)
✓ 彼かれは帰かえりたがっています。

The one exception: if you are quoting the person's own words, たい is fine, because now it is their statement, not your guess.

彼かれは「帰かえりたい」と言いいました。
Kare wa "kaeritai" to iimashita.
He said, "I want to go home."

Tai form examples for daily conversation

Here are lines you can lift straight into real situations.

At a restaurant

すみません、これを注文ちゅうもんしたいです。
Sumimasen, kore o chuumon shitai desu.
Excuse me, I want to order this.

Making plans

温泉おんせんに行いきたいです。でも、買かい物ものもしたいです。
Onsen ni ikitai desu. Demo, kaimono mo shitai desu.
I want to go to a hot spring. But I also want to go shopping.

Long-term goals

将来しょうらい、日本にほんで働はたらきたいです。
Shourai, Nihon de hatarakitai desu.
I want to work in Japan in the future.

いつか富士山ふじさんに登のぼりたいです。
Itsuka Fujisan ni noboritai desu.
I want to climb Mt. Fuji someday.

When you are tired

家いえに帰かえりたいです。もう少すこし寝ねたいです。
Ie ni kaeritai desu. Mou sukoshi netai desu.
I want to go home. I want to sleep a little more.

Softening it and going casual

In Japanese, stating your desires too bluntly can feel a little forward, especially with people you do not know well. Two small softeners fix that.

Add んですが to leave room for the other person:

早はやく帰かえりたいんですが、大丈夫だいじょうぶですか。
Hayaku kaeritai n desu ga, daijoubu desu ka.
I'd like to head home early, is that okay?

Or add と思おもいます to sound more humble:

日本語にほんごを練習れんしゅうしたいと思おもいます。
Nihongo o renshuu shitai to omoimasu.
I think I'd like to practice Japanese.

And when you are with close friends, drop です entirely and let it be casual:

映画えいが見みたい！ (Eiga mitai! means "I wanna watch a movie!")

For very formal business settings you may hear keigo versions like たく存ぞんじます or させていただきたいです, but do not rush there. Get comfortable with plain たい first, and the rest follows.

The more you say what you actually want in Japanese, the more natural it gets, until one day you order that matcha latte without thinking twice. 頑張って！

What to study next

• How to Say I Want in Japanese: たい vs 欲しい
• ます Form: Polite Verb Conjugation
• Verb Stem: The Building Block
• Verb Basics: U-verbs, Ru-verbs, Irregulars

Want to practice lines like these in real conversations instead of just reading them? Benkyō: Speak & Learn Japanese drills the たい form with example sentences and daily practice you can do in a few minutes.