What are English words that have no vowels?

All of these are valid according to the official Scrabble dictionary, but they're pretty bizarre!

byrls

chynd

crwth

crypt

cwtch

cysts

dryly

flyby

fyrds

ghyll

glyph

grypt

gymps

gynny

gyppy

gypsy

hwyls

hymns

kydst

kynds

lymph

lynch

myrrh

myths

mythy

nymph

phpht

psych

pygmy

rynds

shyly

skyfs

skyrs

slyly

stymy

sylph

synch

syncs

synds

synth

syphs

thymy

tryps

tryst

tymps

typps

wryly

wynds

wynns

xylyl

xysts

brrr

byrl

cwms

cyst

drys

fyrd

gymp

gyms

gyny

gyps

hwyl

hymn

hyps

jynx

kynd

lych

lyms

lynx

mycs

myth

pfft

prys

psst

rynd

scry

skry

skyf

skyr

spry

sync

synd

syph

tryp

tsks

tygs

tymp

tynd

typp

typy

whys

wych

wynd

wynn

wyns

xyst

ympt

zzzs

brr

bys

cly

cry

cwm

dry

fly

fry

gym

gyp

hmm

hyp

lym

myc

nth

nys

pht

ply

pry

pst

pyx

rhy

shh

shy

sky

sly

sny

spy

sty

swy

syn

thy

try

tsk

twp

tyg

vly

why

wry

wyn

zzz

by

ch

fy

hm

ky

mm

my

ny

sh

st