阴阳双补yīn yáng shuāng bǔ

nourishing both yin and yang

• originality
• ornament
• ornate
• ornithology
• orotund
• orthodontics
• orthodox
• orthopedics
• oscillate
• osmosis
• osseous
• ossify
• ostensible
• ostracize
• ostrich
• otiose
• oust
• outbid
• outcast
• outfox
• outgoing
• outlandish
• outmoded
• outrage
• outstrip