oligarchy, 64
omelet, 73
omission, 20
omit, 24
omitted, 8
omitting, 72
one, 79
only, 50
opaque, 72
operation, 23
opinion, 50
opportunity, 13
opposite, 5
opposition, 5
optician, 72
optional, 72
oracle, 72
orchid, 72
ordinance, 78
ordnance, 78
ore, 79
organization, 50
organize, 72
origin, 16
original, 29
oscillation, 17
osmosis, 38
ostracise, 28
ostracism, 28
ought, 76
our, 79
oxidize, 50
oxygen, 4
paging, 59
paid, 17
palate, 56
palette, 56
papacy, 59
paraffin, 23
paragraph, 29
parallel, 1
parallelogram, 4
parasite, 29
parasitic, 67
parcel, 73
parentheses, 5