I've come to realise this list may never end as it is added to daily. An obvious preference toward certain letters has also been brought to my attention...

• acerbic
• acosmism - n. a philosophy in which nothing is real but the Absolute
• acquiesce
• acrid
• acrimony
• aegis
• ailurophile
• altruistic
• ambulatory
• ameliorate
• anagapesis
• anaphora - n. repetition of a word or phrase in poetry or prose
• anathema
• animadversions
• anomie
• antediluvian
• appellation
• appoggiaturas - also called "grace notes"
• apropos
• ardour
• arrhythmia
• assemblage
• astute
• aubade - n. love song which is sung at dawn
• aureate - adj. elaborately wordy prose; golden
• austere
• avarice
• avuncular
• bacchanalia
• bailiwick
• baleful
• balustrade
• basorexia - n. a hunger for kissing
• behoove
• beleaguer
• bellicose
• berated
• bluestocking
• boustrophedon
• braggadocio
• Brobdingnagian
• brood
• brouhaha
• brusque
• bucolic
• buoy
• calibre
• catharsis
• cede
• chatoyant
• chiaroscuro
• clandestine
• colloquialism
• concupiscence
• connoisseur
• convalescence
• convivial
• crass
• curmudgeon
• cynosure
• demesne
• demure
• denouement
• desuetude
• desultory
• diaphanous
• dint
• dissemble
• dulcet
• dwale - n. a sleeping potion; belladonna or deadly nightshade
• dwalen - v. to stray or wander
• dysphoria - n. an emotional state of restlessness or anxiety
• ebullience
• echelon
• edification
• effervescent
• efflorescence
• effuse
• egregious
• eigengrau - n. the fuzzy grey that's seen in the dark
• eke
• elision
• elixir
• eloquence
• elucidate
• embrocation
• emollient
• ennui
• ephemeral
• epicaricacy - n. schadenfreude
• epiphany
• ersatz
• erstwhile
• esoteric
• ethereal
• eumoirous - n. happiness from being innocent and wholesome
• evanescent
• evocative
• excrescences
• extemporaneous
• felicity
• firmament
• fisticuffs
• forbearance
• fortuitous
• frabjous - adj. "O frabjous day!" from Lewis Carroll's Jabberwocky
• frenetic
• frileux - adj. sensitive to cold
• frutescent
• fugacious
• furtive
• gambol
• gossamer
• grandiloquent - adj. pompous in language or manner so as to impress, magniloquent
• grandiose
• haberdashery
• halcyon
• harbinger
• heliolatry - n. worship of the sun; sunbathing
• holocene
• hubris
• hypophrenia - n. a feeling of sadness seemingly without cause
• ignominious
• illicit
• imbrication
• imbroglio
• imbue
• incipient
• ineffable
• inexorable
• inglenook
• insouciance
• inure
• iota
• irascible
• jackanapes - n. an impertinent person or tame monkey
• jejune - adj. naive; uninteresting ideas or writings
• ken
• kismet
• labyrinthine
• lagniappe
• lagoon
• lamentation
• languorous
• lassitude
• legion
• leisure
• licentious
• lilt
• lissome
• listlessness
• litany
• macrocosm
• maelstrom
• magnanimous
• mamihlapinatapai - n. a look shared by two people both wishing the other would initiate what both desire but neither will start
• maudlin
• melee
• mellifluous
• mélomane - n. music lover
• mercurial
• mien
• mimp - v. to pucker or purse one's lips
• moiety
• mondegreen
• moribund
• moue
• multifarious
• murmurous
• nascent
• nebulous
• nemesis
• neophyte
• obfuscation
• ombre
• onus
• oporopolist
• opulent
• orifice
• panacea
• paradigm
• paralian - n. someone who lives near the sea
• pastiche
• penumbra
• percipient
• percolating
• peregrination
• persnickety
• pervigilo - v. to lie awake all night
• petrichor
• pettifogging - adj. petty; of a person: placing undue emphasis on petty details
• pica
• pontificate
• proclivity
• profligate
• propinquity
• pulchritude
• pusillanimous
• pyrrhic
• quintessential
• rapacious
• ravel
• reconnaissance
• redolent
• redamancy
• remonstrance
• restitution
• reticent
• rictus
• rimjhim
• riparian
• riposte
• sabaism - n. worship of the sun, moon, and stars
• saccharine
• sacrosanct
• sanguineous
• saturnine
• scarper
• schadenfreude - n. pleasure felt at another's misfortunes
• scintilla
• scunnered
• sedition
• sempiternal
• sequester
• seraglio
• seraphic
• serendipity
• sobriquet
• solicitous
• soliloquy
• somnambulist
• somnolent
• soporific - adj. sleep inducing
• sordid
• squiriferous
• striation
• supercilious
• surreptitious
• susurrus
• sybaritic
• sycophant
• synapse
• tacenda - n. things better left unsaid; matters to be passed over in silence
• taciturn
• talisman
• tetchy
• tintinnabulation
• torrential
• toska - Vladmir Nabokov: “No single word in English renders all the shades of toska. At its deepest and most painful, it is a sensation of great spiritual anguish, often without any specific cause. At less morbid levels it is a dull ache of the soul, a longing with nothing to long for, a sick pining, a vague restlessness, mental throes, yearning. In particular cases it may be the desire for somebody of something specific, nostalgia, love-sickness. At the lowest level it grades into ennui, boredom."
• tryst
• ubiquitous
• unguent
• untoward
• vacuity
• velocipede
• verbose
• verisimilitude
• vermiform
• vestigial
• visceral
• vitriol
• vituperative
• volatile
• wabi-sabi - Japanese aesthetic partly centering on acknowledgment that nothing lasts, nothing is finished, and nothing is perfect
• wafture
• weltschmertz
• wherewithal
• winsome
• woebegon
• wont
• zephyr
• zeppelin