suboctave /sub-okˈtiv/

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

• okey-dokey
• okimono
• okimonos
• OKing
• Oking
• Okla.
• okra
• okras
• Oks
• okta
• oktas
• -ol
• OLAF
• olanzapine
• Olbers' paradox
• old
• old age
• old age pension
• old-age pension
• old-age pensioner
• old-age pensioners
• old-age pensions
• old as the hills
• old bachelor
• old bachelors