(-)odd
-o
O, oh
O.K., o.k., OK, ok, okay, okeh
o’er, over
oasis
oater
oath
obedient
obeisance, obesity
OBJECT
OBJECT COMPLEMENT
OBJECT OF A PREPOSITION
object!! German Objekt 'house, piece of property (for sale)'
objective !! German Objektiv 'camera lens,' objektiv 'objective'
OBJECTIVE AND SUBJECTIVE PRONOUNS
OBJECTIVE CASE
OBJECTIVE GENITIVE
objectives
objects, verbs not allowing finite clause [mdm]
objet d’art, art object, object of art
obligated, obliged, obligate, oblige
obliqueness, obliquity
oblivious
oblivious, forgetful, neglectful, unaware
obnoxious
OBSCENE 1
obscene 2, obscenity
obscure !! German obskur 'dubious, suspect'
observance, observation
observant
observation
obsessed
OBSOLETE 1, OBSOLESCENT
obsolete 2, obsolescent
obtain
obtrude
obtuse, abstruse
obverse, converse, inverse, reverse
obviate
occasion
occupy
occur
occurrence
ocher, ochre
octavo
octet, octette
octopus
octoroon
oculist
odious, odorous
odor, aroma, fragrance, odour, perfume, scent, smell, stench, stink
odorous
odour
-oe-
oesophagus
oestrogen
of 1
of 2, for ’ve
of a
of any
of color
of course
of one’s own accord
of, compounded
off
off
off from
off of
off the cuff, off-the-cuff
off the record, off-the-record
off-, -off
offense, offence
offensive
OFFENSIVE EPITHETS AND DISPARAGING LABELS
offhand, offhanded, offhandedly
office
officer, cop, patrolman, peace officer, policeman, police officer, policewoman
official
officiate
officious, official
offload
offspring
off-the-rack
off-the-wall
often
oh
oh-oh
old adage
old cliché
OLD ENGLISH
old people
old saw
olde
olden
older, oldest
old-fashion, old-fashioned
oldster, old-timer !! German Oldtimer 'antique, classic/vintage car'
ology, -ology, -alogy
omelet, omelette
OMITTED RELATIVE, CONTACT CLAUSES
on
on a […] basis, on a basis of
on account of
on balance
on behalf of
on line, in line
on one’s own account
on the basis of, on a basis of
on the part of
on the qui vive
on, upon
oncoming
one
one
one another, one another’s
one fell swoop
one in (out of)
one of the
one of the … if not the
one of those who, one of those things
one or more
one vs. a(n) [mdm]
one’s own accord, on; on one’s own account
oneself, one’s self
ongoing
only
only
ONOMATOPOEIA
onto, on to
onward, onwards
op. cit.
opaque
opera
operate
operation
ophthalmia, oculist, ophthalmology, ophthalmologist, optician, optometrist, optometry
opine
opportunity
opposite
opposition
opt
optician
optimal, optimum
optimize, maximize
option, alternative, choice
optometrist, optometry
opus
or
or
-or
or less
or no
or not
or otherwise
or so [mdm]
-or, -our
oral, orally
orate
oration, address, discourse, lecture, speech, talk
ORATORICAL LEVEL
orchestra
orchestrate, orchestrator, orchestration
order
orderly
ordinal number, cardinal number
ordinance, ordnance
ordinary !! German ordinär 'vulgar, common, base'
oregano
organizations, names of
orient
Oriental
orientate, orient
originate
orotund
orthodox, centrist, conservative, conventional
ORTHOGRAPHY
oscillate, osculate
ostensible, ostentatious, ostensibly, ostentatiously
other
otherwise
ought
ought
ought to of
-our
ours, ourn
ourselves
-ous
out loud
out of
out of (one in)
out of sight
out, out of
outgoing
out-migrant, out-migrate, out-migration
output
outside, outside of
outstanding
outtake
oven !! German Ofen 'heater, fire , boiler'
over
over-
over with
overall
overhear !! German Überhören 'to ignore, to be tired of hearing something'
overlie, overlay
overlook, oversee !! German übersehen 'to overlook, miss, fail to notice'
overly, over-
oversee
oversight !! German Übersicht 'overall view, survey, table'
overview
overwhelm
owing to
own
own [mdm]
OXYMORON