Wanting with たい in Japanese

In Brief

Attach たい to the ます-stem—the part of a verb before ます—to say that you want to do something: 行きます → 行きたい “want to go.” The ending changes like an い-adjective (an adjective whose final い changes): 食べたくない “do not want to eat,” 食べたかった “wanted to eat.” Use it most freely for your own wishes and in questions about the person you are speaking to.

Overview

The ～たい pattern expresses a desire to perform an action. It covers the everyday English pattern “want to + verb”: wanting to travel, eat, study, meet someone, or go home. It is an A1 grammar point, but it immediately makes simple Japanese much more personal and useful.

English uses the separate verb “want” followed by “to.” Japanese instead adds たい directly to a verb stem. For example, the polite form 飲みます “drink” loses ます and becomes 飲みたい “want to drink.” Although the meaning still involves an action, the resulting form changes grammatically like an い-adjective, not like an ordinary polite verb. This explains forms such as 飲みたくない rather than the incorrect 飲みたいません.

Desire also involves viewpoint. You know your own wishes directly, so 私は帰りたいです “I want to go home” is straightforward. You can ask a listener 帰りたいですか “Do you want to go home?” because they can answer for themselves. Stating another person’s private desire requires more care; later sections introduce natural ways to do that.

How It Works

Build the たい form from the ます-stem

Start with a verb in its polite ます form. Remove ます, then add たい.

Dictionary form	ます form	ます-stem	たい form	Meaning
行く	行きます	行き	行きたい	want to go
飲む	飲みます	飲み	飲みたい	want to drink
話す	話します	話し	話したい	want to speak
食べる	食べます	食べ	食べたい	want to eat
見る	見ます	見	見たい	want to see/watch
する	します	し	したい	want to do
来る	来ます	来（き）	来たい（きたい）	want to come

This route works for all verb groups, including the irregular verbs する and 来る. Do not attach たい to the complete ます form: 行きますたい is not possible.

If you already know dictionary-form verb groups, the same stem can be built directly. For a godan verb (a verb whose final kana changes across conjugations), use its い-row stem: 書く → 書きたい, 待つ → 待ちたい, 読む → 読みたい. For an ichidan verb (usually a verb formed by removing final る), remove る: 起きる → 起きたい. Using the familiar ます form is safer for beginners because it avoids guessing the group.

Plain and polite style

The basic たい form is plain. Adding です makes the statement polite without changing たい itself.

Style	Japanese	English
Plain	京都に行きたい。	I want to go to Kyoto.
Polite	京都に行きたいです。	I want to go to Kyoto.

Use the plain form with close friends, in a diary, or before another grammatical ending. Use たいです in ordinary polite conversation. A subject such as 私は is often omitted when the context clearly points to the speaker.

Negative and past forms

Because たい behaves like an い-adjective, replace its final い to make negative and past forms.

Time and polarity	Plain form	Polite form	Example meaning
Non-past affirmative	～たい	～たいです	want to do
Non-past negative	～たくない	～たくないです	do not want to do
Past affirmative	～たかった	～たかったです	wanted to do
Past negative	～たくなかった	～たくなかったです	did not want to do

With 食べる, these become 食べたい, 食べたくない, 食べたかった, and 食べたくなかった. The “non-past” covers present or future wishes; time words and context provide the exact time: 今食べたい “I want to eat now,” 明日食べたい “I want to eat tomorrow.”

More formal negative forms such as 食べたくありません are also correct. In everyday polite speech, 食べたくないです is extremely common and natural.

Questions

Add か to a polite form to ask about the listener’s wishes:

• 何が食べたいですか。 — What do you want to eat?
• どこに行きたいですか。 — Where do you want to go?
• 一緒に見たいですか。 — Do you want to watch it together?

In casual conversation, rising intonation can mark a question: 何食べたい？ “What do you want to eat?” The particles か and が are often omitted in relaxed speech, but the full pattern is best while learning.

Be aware that a direct ～たいですか question can sound personal or overly direct in some service situations. A staff member will often ask 何になさいますか “What will you have?” rather than asking what is inside the customer’s mind. Among friends, however, 何食べたい？ is completely ordinary.

Marking the object: が and を

With a transitive verb (a verb acting on something, such as “eat sushi”), the thing desired can often take either が or を:

• 寿司が食べたいです。
• 寿司を食べたいです。

Both can mean “I want to eat sushi.” が tends to highlight the desired item: sushi is what appeals to you. を keeps the ordinary object marking of 食べる and can make the action feel more prominent. The distinction is a tendency, not a rigid translation rule, and both are widespread.

This alternation mainly concerns the object closely tied to the desired action. Other particles normally stay the same:

• 日本に行きたいです。 — I want to go to Japan.
• 友達と話したいです。 — I want to talk with a friend.
• 図書館で勉強したいです。 — I want to study at the library.

Do not replace every particle with が simply because the sentence contains たい.

Examples in Context

Japanese	English	Note
日本に行きたいです。	I want to go to Japan.	Polite statement of the speaker’s wish
寿司が食べたいです。	I want to eat sushi.	が highlights the desired food
今晩、映画を見たいです。	I want to watch a movie tonight.	を marks the object of 見る
何がしたいですか？	What do you want to do?	A direct question to the listener
週末はどこに行きたいですか。	Where do you want to go this weekend?	に remains the destination marker
今日は家で休みたいです。	I want to rest at home today.	で marks where the action happens
休みたくないです。	I don’t want to rest.	Polite negative in common speech
まだ帰りたくない。	I don’t want to go home yet.	Casual plain style
子どもの時、医者になりたかったです。	When I was a child, I wanted to become a doctor.	Past desire
昨日は何も食べたくなかったです。	I didn’t want to eat anything yesterday.	Past negative; 何も pairs with a negative
いつか日本語で小説を読みたいです。	Someday I want to read a novel in Japanese.	A longer-term aspiration
もう一度先生と話したいです。	I want to speak with the teacher once more.	と marks the conversation partner
A：コーヒーとお茶と、どちらが飲みたいですか。 B：お茶が飲みたいです。	A: Which do you want to drink, coffee or tea? B: I want tea.	が focuses the choice
妹は新しいゲームをしたがっています。	My younger sister wants to play a new game.	Observable desire of a third person

Common Mistakes

Attaching たい to the wrong form

• Wrong: 行くたいです。 / 行きますたいです。
• Right: 行きたいです。
• Why: Attach たい to the ます-stem 行き, not to the dictionary form 行く or the complete polite form 行きます.

Making the negative like a polite verb

• Wrong: 食べたいません。
• Right: 食べたくないです。 / 食べたくありません。
• Why: The final たい changes like an い-adjective: たい → たくない. The politeness marker comes after the completed negative form.

Confusing “want to do” with “want a thing”

• Wrong: 新しい自転車を買うたいです。
• Right: 新しい自転車を買いたいです。 — I want to buy a new bicycle.
• Also right: 新しい自転車が欲しいです。 — I want a new bicycle.
• Why: Use ～たい for an action and 欲しい for wanting a noun (a person, place, thing, or idea). With 買う, form the stem 買い and add たい.

Reporting another person’s feelings as certain

• Awkward without context: 田中さんは帰りたいです。 — Tanaka wants to go home.
• Natural from visible behaviour: 田中さんは帰りたがっています。 — Tanaka seems/evidently wants to go home.
• Natural as a report: 田中さんは帰りたいと言っています。 — Tanaka says they want to go home.
• Why: Plain ～たい directly presents an inner wish. Japanese normally marks how you know a third person’s feelings, unless you are quoting, narrating from that person’s viewpoint, or the context makes the perspective clear.

Changing the wrong particle

• Wrong: 日本が行きたいです。
• Right: 日本に行きたいです。
• Why: Japan is the destination of 行く, so it takes に. The が/を choice applies to objects in patterns such as 寿司が／を食べたい, not to destinations or locations in general.

Using たい as a command or invitation

• Potentially confusing: 一緒に行きたいですか。 — Do you want to go together?
• Clear invitation: 一緒に行きませんか。 — Would you like to go together?
• Why: A たい question asks about desire. The negative question ～ませんか conventionally makes an invitation. Choose the form that matches your purpose.

Usage Notes

Subjects are usually understood

Because ～たい most often expresses the speaker’s wish, 私は is frequently unnecessary. At a restaurant, ラーメンが食べたいです naturally means “I want to eat ramen.” Add 私は when contrasting yourself with someone else: 兄は帰りたいですが、私はまだ遊びたいです “My older brother wants to go home, but I still want to have fun.”

たい can sound strong

～たい clearly names a personal desire. That directness is useful with friends and when answering a question. In formal planning or when your preference should not sound like a demand, ～たいと思います (“I think I would like to…”) is softer:

• この点について説明したいです。 — I want to explain this point.
• この点について説明したいと思います。 — I would like to explain this point.

The second is common in presentations and considered statements. It does not literally express uncertainty every time; 思います often softens how the intention is presented.

Desire is not the same as intention

明日勉強したいです says that studying is your wish, not that you have made a firm plan. 明日勉強します “I will study tomorrow” states an intention more directly. Likewise, 行きたいけど、時間がありません “I want to go, but I don’t have time” shows that a desire need not become an action.

Everyday contractions and omissions

Casual speakers commonly omit particles and です: 何食べたい？, 映画見たい, 帰りたくない. These are natural in conversation but are not new conjugations. Learn the full versions first—何が食べたいですか, 映画を見たいです, 帰りたくないです—so that you can recognise what has been left out.

Beyond the Basics / Advanced Use

You do not need to master the following points at A1, but they explain forms you will soon encounter.

Third-person desire with ～たがる

Change たい to たがる when someone’s behaviour shows that they want to do something: 子どもが外で遊びたがっています “The child wants to play outside.” Grammatically, ～たがる behaves as a verb. In descriptions of a current visible tendency, ～たがっている is especially common.

This does not mean ～たい can never appear with a third-person subject. It is natural inside a quotation or report—彼は日本に行きたいと言いました “He said he wants to go to Japan”—and fiction may present a character’s inner thoughts directly. The practical rule is to show your source of knowledge rather than treating another person’s private feeling as automatically known.

Connecting たい to another clause

Like an い-adjective, ～たい uses ～たくて to connect to what follows:

• 家族に会いたくて、早く帰りました。 — I wanted to see my family, so I went home early.

The negative connective is ～たくなくて: 行きたくなくて、断りました “I did not want to go, so I declined.” These forms often express a reason, but the relationship depends on context.

～たいなら and ～たかったら

A wish can be made conditional (dependent on an “if” condition):

• 見たいなら、チケットを買いましょう。 — If you want to see it, let’s buy tickets.
• 食べたかったら、どうぞ。 — If you want to eat it, go ahead.

Despite its appearance, ～たかったら often means “if you want to” in the present situation; it is the standard たら conditional built from the past-shaped form. Context determines the time.

Contrasting ～たい with related expressions

Form	Main idea	Example
～たい	personal desire to act	海で泳ぎたい。 “I want to swim in the sea.”
欲しい	desire for a thing	時間が欲しい。 “I want more time.”
～つもりだ	settled intention	来年留学するつもりです。 “I intend to study abroad next year.”
～たがる	another person shows desire	犬が外に出たがっています。 “The dog wants to go outside.”
～てほしい	desire for someone else to act	もっとゆっくり話してほしいです。 “I want you to speak more slowly.”

The last pattern, ～てほしい, is especially important: 話したい means “I want to speak,” while 話してほしい means “I want someone else to speak.” Mixing them changes who performs the action.

Practice Tips

1. Transform verbs in four steps. Choose five useful ます forms each day and make affirmative, negative, past, and past-negative wishes: 会いたい, 会いたくない, 会いたかった, 会いたくなかった. Say each one with a time phrase.
2. Answer a small set of real questions. Practise 何が食べたいですか, どこに行きたいですか, and 週末に何がしたいですか. Give a full answer first, then repeat it naturally without 私は.
3. Sort desire by type. When translating “want,” ask: do I want to perform an action (～たい), possess or obtain a thing (欲しい), or have another person act (～てほしい)? This single check prevents several common errors.

Related Concepts

• Prerequisite: Polite Form ます — provides the verb stem used before たい.