List of expert words

The alphabetical list of words here are rare and only some people know about it. Source YT video:(Lavalava, others not included in source)

'''Please note that some words might not work. If one doesn't work, report it and we will remove it.'''

Reminder: Long words aren't always considered expert words

A
Aboideaux

Abomasum

Adscititious

Adzelike

Aeroplankton

Agrostemma

Amakwerekwere

Amphisbaena

Anacoluthon

Anfractuous

Anguilliform

Anthersmut

Apfelstrudel

Arccsc

Argute

Archaeopteryx

Astrobleme

Autotomy

B
Baaskaap

Banderillero

Bandoline

Banjax

Bangalay

Barmitzvah(s)

Benthos

Benzanthracene

Bergschrund

Bizjet

Blatherskite(s)

Boilover

Borborygmus

Boxwallah

Bravura

Breatharian

Brouhaha

Bruhaha

Burnsides

C
Cacafuego

Cacoethes

Canorous

Callipygian

Callithumpian

Carmagnole

Chiliad

Chanticleer

Chateaubriand

Chautauqua

Chechaquo

Chrysoberyl

Clepsydra

Cokuloris

Coloquintida

Colporteur

Comess

Commensalism

Concinnity

Conniption

Coriaceous

Counter-Countermeasures

Cracovienne

Criticaster

Cryptozoology

Cyanic

Cybersquatting

Cynghanedd

Czareviches

D
Daimokus

Dandiprat

Dariole

Deasil

Decubitus

Defervescence

Doxycycline

Deracinate

Dharmsala

Diezeugmenon

Digerati

Disenthral

Disaccharide

Divaricate

Dihydroxyphenylalaine

Dohyo

Doryphore

Dragoman

Duhkha

Dulciloquy

Dukkeripen

Durchkomponiert

Duumvirate

E
Ecclesiasic(ism)(s)

Edacious

Effable

Einkorn

Eleemosynary

Ektexine

Embourgeoisement

Ensorcell

Entomophagy

Enzymological

Ergometer(s)

Erubescent

Ervalenta

Estranghelo

Ethylenediaminetetraacetates

Eurythmic

Eviternity

Exsanguine

Extramundane

F
Fauxbourdon

Fahlerz

Festschrift

Fibranne

Fizzgig

Flocculent

Flimflam(mery)

Foederatus

Forehanded(ness[es])

Frangipani

Frankalmoign

Fraxinella

Freehanded(ness[es])

Fricandeau(x)

Funambulist

Furuncle

Futhark

Futz

Fylfot

G
Galligaskins

Gedankenexperiments

Gegenschein

Gemutlichkeit

Gewurztraminer

Genistein

Glockenspiel

Gobbledygook

Gohonzon

Gruyere

H
Hackmatack

Hackerazzis

Halakahs

Hallux

Hartebeest

Haruspex

Hide-and-seek

Hojatoleslam

Humdudgeon

Hwyl

Hygge

I
Incarnadine

Incrassate

Indinavir

Incunabula

Iontophoresis

Ijtihad

Ixia

Izvestiya

J
Jamahiriya

Jambalaya

Jasmonate

Jinriksha

Jipijapa

Jumentous

Jovial

Jovysaunce

K
Kahikatea

Kaikawaka

Kaikomako

Kalamdan

Kamaaina

Kantikoy

Karateka

Karuhiruhi

Kashruth

Katsura

Kenspeckle

Kerseymere

Kestrel

Khaddar

Kikuyu

Klebsiella

Koftgari

Kolkhoz/es/nik/niki

Kouskous

Krakowiak

L
Lactarium

Landsknecht

Langostino

Lansquenet

Latitud(inarian)(ism)(s)

Lavalava

Lazzaroni

Leylandii

Liripipe

Logomachy

Lollapalooza

Luculent

Luftmensch

Lwei

Lycanthropy

Lysosomal

M
Mahewu

Malacostracan(s)

Malentendu

Mbaqanga

Mamaguying

Merveilleux

Methylenementhamphetamines

Mishmashes

Milquetoast

Mim

Mimsy

Monchiquite

Moonraker

Muumuu

Mpret

Mridangam

Mujahedeen

Mzungu

N
Naartjie

Nachtmaal

Nduja

Ne'er-do-weel

Nenuphar

Nincompoop(er)(ies)

Nickumpoop

Nomenklatura

Nonchruchgoer(s)

Numnah

Nunatak

O
Obstreperous(ness)(es)

Omadhaun

Omnicompetence

Omophagy

Omphalos

Onychocryptosis

Oojamaflip

Oxyphenbutazones

Opsimath

Organochlorine

Oxyrhynchus

Oyez

Ozeki

P
Paczki

Pancreozymin

Paradente

Pavonazzo

Pedicular

Pipiwharauroa

Piwakawaka

Pompholyx

Pozzuolana

Pneumokoniosis

Pranayama

Privatdozent

Psalmody

Pseudo-anglicism

Pulchritudinous

Q
Qajaq

Qalamdan

Qasida

Qawwalis

Qindarka

Quidnunc

Quincunx

R
Raconteur

Raillery

Ramequin

Ramgunshoch

Rapprochement

Ratah

Rensselaerite

Rigsdaler

Rijksdaaler

Rubicund

Rudbeckia

S
Sackbut

Samekh

Satyagrahi

Schlemiehl

Sesquipedalian

Shiitake

Skikjoring

Skimmington

Shadchan/im

Shakuhachi

Shammasim

Shamiyanah

Shakuhachi

Shavasana

Sheqalim

Shekel

Shibuichi

Shidduchim

Shivoo

Shongololo

Sokaiya

Stichomythia

Stukkend

Suedehead

T
Tableaux

Tawheowheo

Tibiofibulae

Tikoloshe

Timenoguy

Tiktaalik

Triskaidekaphobia/Triskaidekaphobic

Tsesarewitches

Tsktsking

Tsotsitaal

Tumatakuru

Turangawaewae

U
Uniped

Uakari

Unconscionable

Ununenniums

Usquebaugh

V
Vaivode

Valvassor

Vedutisti

Vizsla

Vetiver

Vihuela

Voortrekker

Vouvray

W
Weltanschauung

Whatshername(s)

Whatshisname(s)

Whippoorwill's-shoe

Whatchamacallit

Witgatboom

Witwanton

Woiwode

Wysiwyg

X
Xanthan

Xanthophobia

Xenodiagnosis

Xystos

Y
Yahrzeit

Yakitori

Yfere

Yglaunst

Yukata

Z
Zabaglione

Zabajone

Zante

Zantedeschia

Zantewood

Zeitgeist

Zemstvo

Zinjanthropus

Zikkurat

Zwischenzug

Zugzwang

Zymotechnic

Zyzzvas