The formal form is used especially when conversing with people of higher status in society.

Psychological assessment may come in two forms: formal and informal.

The date is always written in its most formal, longest possible form.

It may be a standard formal form of greeting in special events such as weddings.

The new book, with few exceptions, employed no formal forms.

Sign languages do not have a traditional or formal written form.

After two years together, they still weren't on a first-name basis and used the formal form of "you."

Investment banking, traditionally considered being the more formal form of sales.

The formal forms are used to address someone older and/or higher in social or family status.

Essays should use standard English in a formal written form.