Synonyms for Behind-the-scenes | Behind-the-scenes at Open Dictionary of English by LearnThat Foundation

Synonyms for Behind-the-scenes (same or very similar meaning)

WordNet sense 1 (designed and carried out secretly or confidentially):

under-the-table

WordNet sense 2 (secret or hidden; not openly practiced or engaged in or shown or avowed):

covert

From the ODE community, based on WordNetadd/edit