Usually, the prefix goes directly on the front of the word without a hyphen: subheading, antiwar, unaffiliated, intranet. ... First, you need a hyphen when you place a prefix onto a capitalized word: anti-American.

Does sub section have a hyphen?

The basic rule for prepending Latin and Greek prefixes is to not hyphenate them. Most uses of "sub-" and "super-" should be prepended without using a hyphen.

How do you spell sub heading?

Definition of 'subheading'

Subheadings are titles that divide part of a piece of writing into shorter sections.