How do you say am so lonely in French?

There are several ways to say "I am so lonely" in French, depending on the level of intensity you want to convey:

Formal:

* Je suis très seul(e). (I am very lonely) - This is the most straightforward and polite way to express loneliness.

* Je me sens très seul(e). (I feel very lonely) - This emphasizes the emotional aspect of loneliness.

Informal:

* Je suis tellement seul(e). (I am so lonely) - This is a more intense way to express loneliness.

* Je me sens vraiment seul(e). (I feel really lonely) - This emphasizes the strong feeling of loneliness.

* J'ai tellement le cafard. (I am so down) - This is a colloquial expression that can be used to express loneliness, sadness, and depression.

* Je suis au fond du trou. (I am at the bottom of the hole) - This is a very strong expression that conveys a feeling of extreme loneliness and despair.

Remember to choose the expression that best suits the context and your level of formality.