expletory
/ˈɛkspləˌtɔri/
adjective
- Relating to or serving as an expletive; used to fill a space or add emphasis without adding meaning.
- The word 'there' in 'There is a problem' is an expletory word.
- The teacher explained that 'it' in 'It is raining' is expletory.
- Some writers use expletory phrases like 'it is' to begin sentences.