Intervenernoun
One who intervenes.
Intervenernoun
One who intervenes; especially (Law), a person who assumes a part in a suit between others.
Intervener
An intervener is a person who regularly works one-to-one with an individual who is deaf-blind. Deafblindness is a low incidence disability that describes individuals with varying degrees of vision and hearing losses.
Intervenornoun
One who intervenes, especially in a legal sense.
Intervenornoun
(law) a party who interposes in a pending proceeding