English - Korean/n , o
- overtime - ozone layer
- overlapping - overthrow
- overcome - overlap
- outside a territory - overcoat
- outing wear - outside
- our shop - outing
- origin of a famous product - our school
- original - originator
- ordinary seaman - origin
- order - ordinary person
- oppress - ordeal
- operational - opposition party
- open-minded - operation
- open a country to outside - openly
- on one's own - open
- one upon the heels of another - on one's back
- one's shape after tidying himselfherself - one turn
- one's mind taking a new turn - One's senses fall out
- One's heart collapses - One's mind opens
- One's energy rises - One's heart bursts