moral and religious

morbid and irritable

motionless and commanding

motives and aims

mud and mire

muddled and incoherent

murmurs and reproaches

muscularity and morality

mutable and fleeting

mute and insensate

mutilated and disfigured

muttering and murmuring

mutual and friendly

mysterious and incomprehensible

mystic and wonderful

N

nagging and squabbling

nameless and obscure

narrow and timorous

natural and spontaneous

nauseous and disgusting

neatness and propriety

necessarily and essentially

needs and demands

nefarious and malevolent

negations and contradictions

neglect and evade

negotiate and bargain

nerve and fiber

neutral and colorless

nicety and precision

nimble and airy

noble and powerful

nodding and blinking

noisy and scurrilous [scurrilous = vulgar, coarse, abusive language]

nonsense and absurdity

nooks and corners

notable and conspicuous

noted and distinguished

noteworthy and intelligible

notoriety and prominence

nourish and foster

novelty and freshness

novice and ignoramus

nucleus and beginning

nugatory and ineffectual [nugatory = no importance; trifling]

nullify and destroy

number and variety

numerous and important

O

oaths and revilings

obdurate and impenitent [obdurate = hardened in wrongdoing ]
                           [impenitent = without remorse for sins]

obedient and dutious

obeisance and submission

objectionable and inexpedient

obligation and dependence

obliquity and hypocrisy

oblivious and insensible

obloquy and detraction [obloquy = abusive language]

obnoxious and odious

obscure and enigmatical

obsequies and panegyrics [obsequies = funeral rite]
                              [panegyrics = elaborate praise]

obsequious and conciliating [obsequious = servile compliance; fawning]

observations and reflections

obstacles and disasters

obstinate and stupid

obstreperous and noisy [obstreperous = stubbornly defiant]

obtrusive and vulgar

obtuse and imbecile

obvious and palpable

occasional and contingent

occult and hidden

occupations and habits

odd and dismal