set form

She spoke without the slightest hesitation, yet perfectly simply and after no set form.

The commodities of a set form of words, and the discommodities of free praying, are these following.

But all this may be done without a set form of words; therefore to pray without a set form of words may be lawful.

As far as I know, the songs are always extemporaneous and not composed of any set form of words and verses.

Intimate letters of condolence are like love letters, in that they are too sacred to follow a set form.