0450 metro and Metro metronymic metropolis mews miasma micro- Micronesia mid-Atlantic and mid-Atlantic English 0451 mid-caps middle voice might or could might or may mighty migrant or immigrant mileage or milage milieu militate or mitigate 0452 millenarian, millenary and millen(n)ium millepede or millipede milli- milliard millipede or millepede mimic mini- miniature 0453 minimal or minimum minimize or minify miniscule or minuscule Minorca or Menorca minority 0454 minus minuscule or miniscule mis- 0455 miscegenation miscellanea and miscellaneous mischievous or mischievious 0456 misdemeanor or misdemeanour misinformation or disinformation Miss, Mrs(.) or Ms(.) misspelled or misspelt mistakable or mistakeable mistrust or distrust mitigate or militate mitre or miter mixed metaphors moccasin or mocassin modality and modal verbs 0458 modeled or modelled, modeling or modelling modifiers modus Mohammed Mohave or Mojave mold or mould mollusk or mollusc molt or moult molten or melted momentary or momentous, and momentarily 0459 momento monarchal, monarchial, monarchic or monarchical monetize or monetarize money, moneys or monies, and moneyed or monied -monger 0460 mongoose mono- monogram or monograph monologue or soliloquy monotransitive mood moonlit or moonlighted 0461 mopey or mopy mora moral, morals, morality and morale moratoriums or moratoria more than one morphemes morphine, morphia, laudanum, heroin and opium 0462 morphology and morphemes mortgagor or mortgager, and mortgagee mortise or mortice Moslem mosquitos or mosquitoes most or mostly 0463 -most mot juste mother-in-law motif or motive mottos or mottoes mould or mold moult or molt 0464 mouse moustache, mustache or mustachio mousy or mousey mouthful movable or moveable mowed or mown Mr(.) 0465 Mrs(.), Miss and Ms(.) MS(.) and ms(.) muchly mucus or mucous Muhammad, Mohammed or Mahomet mulatto multi- 0466 multicultural multiple punctuation multiplier symbol, point, period or dot multiplier symbol multiplier point multiplier period multiplier dot mumps Muslim or Moslem must mustache, mustachio or moustache mutatis mutandis 0467 mutual Myanmar myriad and myriads myself mystic or mystical mythological, mythic and mythical 0468 -n/-nn- naive, naïve and naïf naivety or naïveté name--year system named after or named for 0469 names 0471 Nanking or Nanjing narcissus narrative naturalist or naturist naught or nought nauseating, nauseous and nauseated 0472 Navajo or Navaho NB -nce/-ncy 0473 né ne plus ultra Neanderthal or Neandertal nebula necessities or necessaries née and né 0474 need negative concord negatives 0475 negligible or negligent negress or Negress Negro or negro neighbor or neighbour neither 0477 nem. con. neo- nerve-racking or nerve-wracking -ness 0478 net or nett Netherlands nett or net neuralgia, neuritis or neurosis neuter 0479 New Englishes New Guinea New Zealand New Zealand English newspapers and news reporting next or this 0480 nexus or nexuses NGO or quango nice nickel or nickle nicknack or knickknack 0481 nigger, Nigger or Nigga nil nil desperandum nil nisi bonum nite 0482 nitroglycerin or nitroglycerine no No(.)/no(.) no one and no-one noblesse oblige nobody, no one, no-one and none 0483 nom de plume or nom de guerre nominal nominative -nomy and -nymy non- 0484 non compos mentis non sequitur nonce word 0485 nondiscriminatory language none nonessential, inessential and unessential nonfinite clause nonfinite verbs nonplussed or nonplused nonrestrictive nonsense nonsexist language 0486 nonstandard non-U nor or or 0487 normalcy or normality north, northern and northerly nosey or nosy nostrums nosy or nosey not and n't 0488 not about to not only. . . but (also) not un-/in- 0489 notary public nothing (to do with) notional agreement notorious and notoriety nought or naught noun clause 0490 noun phrase nouns nouveau riche 0491 nouvelle cuisine nova nucleus nudist or naturist null hypothesis number number of 0492 number prefixes numbers and number style 0493 -nymy or -nomy 0494 O or Oh -o 0495 -o- oasis obiit sine prole obiter dictum and obiter dicta object 0496 objective case objective genitive objet d'art obliged to or obligated to 0497 oblique line or stroke oblivious to or oblivious of observance or observation obsessed 0498 obstetric or obstetrical obverse or reverse occupant or occupier ochre or ocher o'clock octa or okta octa- or octo- octopus 0499 octoroon or octaroon oculist OD and KO -odd and odd odious, odorous, odiferous and odoriferous odor or odour oe/e 0500 oedema or edema oenology or enology oesophagus or esophagus oestrogen or estrogen of and 've 0501 off and off of 0502 offense or offence official or officious officialese officious or official offspring oftener or more often ogre and ogreish Oh or O -oid OK or okay 0503 okta or octa older or elder, and oldest or eldest olla podrida -ology Olympian, Olympic and Olympiad ombudsman, ombud, ombudsperson omelet or omelette 0504 omission mark omitted relative omnibus on/in -on one 0505 -one or -body one in, one out of, and one of those on-line, online or on line 0506 only onomatopoeia onto or on to 0507 onward or onwards -onymy or -onomy opacity or opaqueness op.cit. opera and operetta 0508 operator or operative ophthalmic or opthalmic; ophthalmologist or opthalmologist opium opportunity to, opportunity of or opportunity for opposite of, opposite to or opposite from 0509 opthalmic or ophthalmic optician, optometrist, oculist or ophthalmologist optimum or optimal optometrist, oculist or ophthalmologist opus or 0510 -or/-our 0511 oratio orbited ordain and ordinance ordered ordinance or ordnance ordinary or ordinal, and cardinal 0512 organdie, organdy or organza orient or orientate orphans ortho- orthopedic or orthopaedic -ose o.s.p. ostensible, ostensive or ostentatious other than and otherwise 0513 other's or other's otherwise ought 0514 -ous out of and out outdoor, outdoors and out-of-door outside of and outside 0515 outward or outwards over- overawing or overaweing overflowed or overflown overlay or overlie 0516 overlook, oversee and oversight overly overstatement overtone or undertone ovum owing to or due to 0517 oxidation and oxidization oxymoron Oz 0518 -p/-pp- p. pace pacifist or pacificist paederast paediatrician and paediatrics paedophile and paedophilia page, homepage and webpage 0519 paid or payed pajamas or pyjamas Pakistan palate or pallet paleo-/palaeo- palette, pallette, pallet or palate palindrome 0520 pallette, pallet, palette or palate pan- pandemic, epidemic or endemic pandit or pundit paneled or panelled, and paneling or panelling panic paparazzi papaya, papaw or pawpaw Papua New Guinea 0521 papyrus para- parable paradigm 0522 paradise paragraphs 0523 parakeet or parrakeet parallel parallel constructions paralyze or paralyse paranoid, paranoiac and paranoic 0524 paraphernalia paraphrase parasitic or parasitical parataxis parcel parentheses parenthesis parenthetical or parenthetic 0525 parlay or parley parliament parlor or parlour parody paronomasia parrakeet or parakeet parricide or patricide pars pro toto part or parting part of 0526 participles particles partly or partially partner 0527 parts of speech parvenu or parvenue passed or past 0528 passim passive verbs past or passed past tense 0529 pasta, paste, pastry, pasty, pâté or patty patella pathos patricide or parricide patronymic patty, pâté, pasty or pasta paver, paviour or pavior pawpaw, papaw or papaya 0530 payed or paid PC, p.c., pc or pc. peaceable or peaceful peak, peek or pique peccadillo peccavi pedagogue or pedagog pedaled, pedalled or peddled pederast or paederast 0531 pediatrician or paediatrician, and p(a)ediatrics pedlar, peddler or pedal(l)er pedophile or paedophile, and p(a)edophilia peek, peak or pique pejorative Peking or Beijing penciled or pencilled peninsula or peninsular penumbra 0532 per per- per procurationem and p.p. percent, per cent and % 0533 percentage perceptibly or perceptively perfect aspect perfectible or perfectable perhaps or maybe peri- period periodic or periodical 0534 perjurer or perjuror perma- permanence or permanency permissive or permissible pernickety or persnickety perpetual calendar perquisite or prerequisite persistence or persistency persnickety or pernickety person 0535 -person persona persona non grata 0536 personal or personnel personal pronouns personification anthropomorphism personnel or personal persuade or convince persuasion 0537 pertinence or pertinency perverse or perverted petaled or petalled petitio principii petrol or petroleum ph or f phalanx 0538 phallus pharmacist, druggist or chemist phase or faze 0539 PhD, Ph.D or Ph.D. phenomenon and phenomena 0540 phil- or -phile Philip or Phillip Philippines Phillip or Philip philtre or philter -phobia and phobia 0541 phonesthemes phoney or phony phonograph and gramophone phony or phoney 0542 phosphorus or phosphorous phrasal/prepositional verbs phrases 0543 pica picket picnic pidgins and creoles pièce de résistance 0544 pied à terre pigmy or pygmy pimento or pimiento pinky, pinkie and pinko pique, peek or peak pis aller piscina pistol or pistil pitiful, pitiable or piteous pixil(l)ated or pixelated 0545 placenames placenta plagiarism plain or plane Plain English and plain language 0546 plaintiff and plaintive plane or plain planetarium plateau 0547 platefuls or platesful playwright, playwrighting and playwriting pleaded or pled plein air plentiful or plenteous plenty pleonasm 0548 plethora plough or plow 0549 plummet pluperfect pluralia tantum plurals 0550 plus