suboctave /sub-okˈtiv/

1. The octave below
2. (also suboctave coupler) an organ coupler that gives an octave below

• congelation
• congelations
• congener
• congeneric
• congenerical
• congenerics
• congenerous
• congeners
• congenetic
• congenial
• congenialities
• congeniality
• congenially
• congenic
• congenital
• congenitally
• conger
• conger-eel
• conger-eels
• congeries
• congers
• congest
• congested
• congestible
• congesting