高中英文參考詞彙表：第六級 N, O

nag
narrate
narrator
nationalism
navigate
navigation
nearsighted
nickel
nostril
notable
notorious
nourish / nourishment
novice
nucleus
nude
nurture

oasis
oath
oatmeal
oblige
obsess
obstinate
occurrence
octopus
odor
offshore
offspring
operative
oppress
oppression
ordeal
orderly
organizer
orient
oriental
originate
ornament
orphanage
orthodox
ounce
outbreak
outgoing
outing
outlaw
outlook
outnumber
outrage
outrageous
outright
outset
outskirts
outward
outward / outwards
overdo
overflow
overhear
overlap
overwork
oyster
ozone