Wanting with たい in Japanese

Overview

Expressing what you want to do is one of the most fundamental communication skills, and in Japanese, you do this by attaching たい to a verb stem. This A1-level grammar point lets you say things like "I want to go," "I want to eat," and "I don't want to do that" — essential phrases from your very first days of speaking Japanese.

The たい form is straightforward to construct: take the verb's ます-stem and add たい. What makes it interesting is that once attached, the whole expression behaves like an い-adjective, meaning it conjugates for negative, past, and past negative just like adjectives do. This is a helpful pattern — once you know i-adjective conjugation, you already know how to conjugate たい forms.

One important cultural note: たい directly expresses your own desires. In Japanese, it is natural to use たい for yourself (first person), but using it to state what someone else wants can sound presumptuous. For describing others' desires, Japanese uses たがっている instead. At the A1 level, focus on using たい for your own wants and in questions addressed to the listener.

Formation / How It Works

Basic Formation

Remove ます from the polite form and add たい:

Dictionary Form	ます Form	Stem	たい Form
行く (to go)	行きます	行き	行きたい
食べる (to eat)	食べます	食べ	食べたい
飲む (to drink)	飲みます	飲み	飲みたい
する (to do)	します	し	したい
見る (to see)	見ます	見	見たい
買う (to buy)	買います	買い	買いたい

Conjugation (like an い-adjective)

Form	Pattern	Example (行きたい)
Affirmative	stem + たい	行きたい (want to go)
Negative	stem + たくない	行きたくない (don't want to go)
Past	stem + たかった	行きたかった (wanted to go)
Past negative	stem + たくなかった	行きたくなかった (didn't want to go)

Add です for polite form: 行きたいです, 行きたくないです, etc.

Object Particle: が or を

The object of a たい verb can be marked with either が or を:

Particle	Example	Nuance
が	寿司が食べたい	Emphasizes the desire; more natural with たい
を	寿司を食べたい	Emphasizes the object; also correct

Both are grammatically acceptable. が tends to sound more natural in many contexts with たい, but を is never wrong.

Examples in Context

Japanese	English	Note
日本に行きたいです。	I want to go to Japan.	Polite affirmative
寿司が食べたいです。	I want to eat sushi.	Object marked with が
何がしたいですか？	What do you want to do?	Question form
休みたくないです。	I don't want to take a break.	Negative
コーヒーが飲みたいです。	I want to drink coffee.	Everyday desire
新しい靴を買いたいです。	I want to buy new shoes.	Object marked with を
映画が見たかったです。	I wanted to watch a movie.	Past tense
何も食べたくないです。	I don't want to eat anything.	Negative with 何も
どこに行きたいですか？	Where do you want to go?	Question with どこ
日本語がもっと話したいです。	I want to speak more Japanese.	With もっと (more)
早く帰りたいです。	I want to go home early.	With adverb 早く
昨日は寝たくなかったです。	I didn't want to sleep yesterday.	Past negative

Common Mistakes

Wrong: 行くたい Right: 行きたい Why: たい attaches to the ます-stem, not the dictionary form. Remove ます from 行きます to get 行き, then add たい.

Wrong: 彼は日本に行きたいです。(stating someone else's desire as fact) Right: 彼は日本に行きたがっています。 Why: たい expresses the speaker's own desire. To describe what a third person wants, use たがっている. Using たい for others sounds like you are reading their mind.

Wrong: 食べたいではないです。 Right: 食べたくないです。 Why: Since たい conjugates like an い-adjective, the negative is formed by changing い to くない, not by adding ではない.

Usage Notes

In casual speech, です is dropped entirely: 行きたい, 食べたくない. Among friends, this is the standard way to express desires. In polite or professional settings, always include です.

The question 何がしたいですか (What do you want to do?) is very direct. In some situations, Japanese speakers soften this with expressions like 何かしたいことはありますか (Is there something you'd like to do?). As a beginner, the direct form is perfectly fine, but be aware that indirectness is valued in Japanese communication.

When expressing desires in the past that were not fulfilled, you can combine たかった with のに (but/although): 行きたかったのに、行けなかった (I wanted to go, but I couldn't). This extension of the pattern is very natural and comes up frequently in conversation.

You can also use たい with other grammatical structures you will learn later: 食べたいと思います (I think I want to eat — softer expression), 食べたい時 (when I want to eat), 食べたいものがない (there is nothing I want to eat). The たい form plugs into many patterns because it behaves just like an adjective.

Practice Tips

• Practice with daily routines. Every morning, say three things you want to do that day: 今日はコーヒーが飲みたいです。本が読みたいです。友達に会いたいです。 This builds the pattern into your muscle memory.
• Drill all four conjugation forms. Pick a verb and run through affirmative, negative, past, and past negative in sequence: 食べたい → 食べたくない → 食べたかった → 食べたくなかった. Speed comes with repetition.
• Use が for the object when in doubt. While both が and を work, starting with が will sound more natural in most たい sentences and helps you internalize the pattern.

Related Concepts

• Polite Form ます