Moi aussi vs Moi non plus vs Moi si vs Moi non

These four expressions allow you to agree or contradict statements in French. They may seem confusing at first, but once you understand the logic of positive vs negative statements, you’ll be able to respond naturally every time.

You can download a PDF of this lesson guide in my private French Grammar Library.

1. Moi aussi – Me too (positive agreement)

Use moi aussi to agree with a positive statement.

Examples:

J’aime le chocolat. → Moi aussi. → I like chocolate too.
Il est fatigué. → Moi aussi. → He’s tired. So am I.
Nous voulons partir tôt. → Moi aussi. → I want to leave early too.

If the original statement is positive, and you agree, use moi aussi.

2. Moi non plus – Me neither / neither do I (negative agreement)

Use moi non plus to agree with a negative statement.

Examples:

Je n’aime pas le café. → Moi non plus. → I don’t like coffee either.
Il ne veut pas venir. → Moi non plus. → I don’t want to come either.

Important:

English speakers often mistakenly say moi aussi after a negative, and that’s incorrect.
Non plus literally means “not either,” so it always matches the negative statement.

3. Moi si – Yes I do / actually I do (contradicting a negative statement)

Use moi si when you contradict a negative statement.

Examples:

Je n’aime pas le fromage. → Moi si! → I do (like cheese)!
Il ne veut pas sortir. → Moi si! → I do want to go out!
Elle n’a pas faim. → Moi si. → I am hungry.

Astuce:

Think of si as meaning “actually yes” in response to a negative statement.
Moi si is very common in everyday French, much more than moi non in contradiction.

4. Moi non – No I don’t (contradicting a positive statement, less common)

Use moi non when you contradict a positive statement.

Examples:

J’adore les films d’horreur. → Moi non. → I don’t (like horror movies).
Il aime voyager. → Moi non. → I don’t.

Note:

In speech, French speakers often just repeat the verb instead: Je n’aime pas, instead of saying moi non.
Moi non is grammatically correct but less frequent than the other forms.

5. Reference guide

Original statement	Positive agreement	Negative agreement	Contradict negative	Contradict positive
Positive	Moi aussi	–	–	Moi non
Negative	–	Moi non plus	Moi si	–

6. Tricky points for English speakers

English only has me too / me neither. In French, you must choose the right one depending on the polarity (positive or negative) of the original statement.
Moi si is a lifesaver for contradicting negatives. English speakers often try to use moi aussi incorrectly.
Moi non is grammatically correct but often replaced by repeating the verb.

This vs That Lesson Series – French Contrasts