melodious platitudes

melodramatic resource

melting mood

memorable experience

menacing attitude

mendacious tongue [mendacious = false; untrue]

mendicant pilgrim [mendicant = beggar]

mental metamorphosis

mercenary view

merchantable literature

merciful insensibility

merciless censor

mercurial temperament

mere generalization

meretricious allurements [meretricious = plausible but false]

meridian splendor

merited ridicule

merry jest

metallic immobility

metaphysical obscurity

meteoric splendors

methodical regularity

metrical exactness

microscopic minuteness

mighty animosity

mild rejoinder

militant struggles

military autocracy

millennial reign

mimic gestures

minatory shadow [minatory = menacing or threatening]

mincing precision

mingled decorousness

miniature imitations

minor impulses

minute consideration

miraculous profusion

mirroring lake

mirthful glance

mischievous effusion

miserable musings

misleading notion

misshapen oddities

misspent strength

mistaken assumption

mistrustful superiority

misty depression

mitigating circumstances

mobile countenance

mock seriousness

modest cheerfulness

modified sentiment

moldy doctrines

mollifying conditions [mollifying = calming; soothing]

momentary discomfiture

momentous pause

monarchial institutions

monastic austerity

monotonous sameness

monstrous absurdity

monumental structure

moody silence

moonlight witchery

moral obliquity [obliquity = deviation or aberration]

morbid imagination

mordant wit

moribund mediocrities

mortal affront

mortified coldness

motley appearance

mountainous inequalities

mournful magnificence

mouthing amplitude

muddled opinion

muddy inefficiency

muffled detonations

mullioned windows [mullioned = vertical member dividing a window]

multifarious activity

multiform truth

multiple needs

multitudinous details

mundane importance

mural decorations

murderous parody

murky recesses

musical diapason [diapason = full, rich outpouring of harmonious sound]