Java Lombok: Omitting one field in @AllArgsConstructor?

No that is not possible. There is a feature request to create a @SomeArgsConstructor where you can specify a list of involved fields.

Full disclosure: I am one of the core Project Lombok developers.

Alternatively, you could use @RequiredArgsConstructor. This adds a constructor for all fields that are either @NonNull or final.

See the documentation

A good way to go around it in some cases would be to use the @Builder

Just in case it helps, initialized final fields are excluded.

@AllArgsConstructor
class SomeClass {
    final String s;
    final int i;
    final List<String> list = new ArrayList<>(); // excluded in constructor
}

var x = new SomeClass("hello", 1);

It makes sense especially for collections, or other mutable classes.

This solution can be used together with the other solution here, about using @RequiredArgsConstructor:

@RequiredArgsConstructor
class SomeClass2 {
    final String s;
    int i; // excluded because it's not final
    final List<String> list = new ArrayList<>(); // excluded because it's initialized
}

var x = new SomeClass2("hello");