Editing a field label on a form

I have a field with text that is cut in the middle, when I try enlarge the field - sort it in one line, the text is still cut in the middle, I also tried to change width section, the field is longer but the text is the same (cut in the middle) how can I edit it ?
For summarize : - I edited the field to be as one row and I changed the section width -> the label width area to 250 (which is the max).
Can I do more ? is there an option to divide the label text to two lines ? Am I missing something ?