Frequency - Word Form
  31 o
   2 oak
   1 oaks
   1 obedient
  25 object
   4 object-glass
   3 objection
   4 objections
   1 objective
  27 objects
  16 obliged
   1 obligingly
   6 oblique
   1 obliquely
   2 obliquity
   2 oblong
   2 obscure
   1 obscurity
  19 observation
  34 observations
   3 observatories
  37 observatory
  15 observe
  21 observed
  10 observer
  13 observers
   9 observing
   2 obstacle
   3 obstacles
   2 obstinacy
   2 obstinate
   3 obstinately
   4 obtain
   9 obtained
   3 obtaining
   4 occasion
   2 occasional
   1 occasionally
   1 occasioned
   2 occasions
   1 occultation
   2 occulted
  15 occupied
   7 occupies
  12 occupy
   2 occupying
   2 occur
   4 occurred
   1 occurrence
   2 occurs
  16 ocean
   2 oceanica
   5 oceans
   1 octant
   1 octants
  16 october
   1 odd
   1 odier
   1 odorous
   2 oeuvre
3947 of
  33 off
   1 offending
   7 offer
  13 offered
   2 offering
   3 offers
   4 office
   3 officer
  14 officers
   1 official
   1 officials
   7 often
   1 oftentimes
  10 oh
   1 ohio
   1 oil
  28 old
   3 older
   2 olives
   1 omit
   2 omitted
 586 on
  49 once
 362 one
   1 one-eighth
   1 one-fifteenth
   1 one-fifth
   1 one-forty-ninth
   1 one-half
   1 one-ninth
   2 one-sixth
   5 one-third
   5 ones
   7 oneself
 161 only
   3 onward
   1 opaque
  28 open
  18 opened
  10 opening
   2 openings
   1 opera-glasses
  31 operation
   6 operations
  20 opinion
   5 opinions
   3 opponent
   1 opportune
   8 opportunity
   1 opposed
  11 opposite
   6 opposition
   3 oppressed
   7 optical
   1 optician
   1 optics
 191 or
   1 orange-trees
   7 orator
  42 orb
   2 orbi
  20 orbit
   2 orbits
   4 orbs
  46 order
   3 orders
   1 ordinarily
   7 ordinary
   1 ore
   5 organization
   6 organized
   1 organizing
   5 orifice
   8 origin
   4 original
   5 originally
   1 originals
   2 orleans
   1 ornamental
   1 ornaments
   1 orographic
   4 orography
   1 oscillated
   1 oscillates
   1 oscillation
 122 other
  36 others
   3 otherwise
   1 ottoman
  48 ought
 200 our
   4 ours
  20 ourselves
  94 out
   1 outbreak
   6 outer
   2 outline
   1 outshining
  12 outside
   1 outstep
   1 outward
   1 ovation
   3 oven
   2 ovens
  78 over
   1 over-excitement
   1 over-running
   7 overcome
   1 overcoming
   2 overexcited
   1 overexcitement
   2 overflowed
   1 overflowings
   1 overloaded
   3 overlook
   4 overlooked
   1 overlooking
   1 overpowered
   1 overpowering
   1 overshadowed
   1 oversize
   1 overwhelmed
   1 owed
   1 owes
   2 owing
  36 own
   1 oxen
  26 oxygen
   1 oysters