Countable Nouns Ending in S and Containing TH
Browse 337 valid English countable nouns ending in S and containing TH, from Thanks, Ethics, Thesis, Hypothesis, Synthesis, Thickness and Threads to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.
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Starts with A
24 words aesthetics
arthritis
antithesis
apotheosis
authoress
acanthus
agapanthus
australopithecus
arthrodesis
anthias
ailanthus
arthrosis
anthemis
anthropophagus
anthesis
anthropomorphosis
aesthesis
anthroponosis
amphiarthrosis
amianthus
anophthalmos
anigozanthos
aegithalos
aegyptopithecus
Starts with B
12 words bathers
bedclothes
biosynthesis
bothrops
bothros
bothriolepis
bothriocephalus
broncholithiasis
blepharolithiasis
brenthis
bryanthus
bothriocidaris
Starts with C
24 words catharsis
calisthenics
carpathians
cholelithiasis
cantharides
cathexis
catholicos
ceanothus
canthus
cacoethes
chemotherapeutics
cercopithecus
calycanthus
cheiranthus
chimonanthus
clothespress
cothurnus
cyathus
cynognathus
cantharus
cantharis
catharanthus
cathetus
cheilanthes
Starts with D
10 words druthers
dianthus
diathesis
diarthrosis
dorotheanthus
diorthosis
desmanthus
diasynthesis
disanthus
dibothriocephalus
Starts with E
24 words ethics
ethos
ethnogenesis
electrosynthesis
epenthesis
epithalamus
epicanthus
erythrocytosis
ethnos
epithesis
enarthrosis
eleutherios
eleutherococcus
erignathus
ethiops
epanorthosis
esthesis
erianthus
euthynnus
eoanthropus
ethmoiditis
erithacus
eranthis
ethanolysis
Starts with F
2 words feathergrass
felichthys
Starts with G
2 words gasthaus
galanthus
Starts with H
12 words hypothesis
hypothalamus
horsefeathers
helianthus
hyacinthus
helminthiasis
hyacinthoides
hydrarthrosis
hydropathics
haemanthus
hesperornithes
helminthostachys
Starts with I
7 words isthmus
ichthys
ichthyosis
ichthyosaurus
ichthyornis
ithyphallus
ichthyophthirius
Starts with K
1 words kantharos
Starts with L
11 words leathers
lisianthus
lithiasis
leatherworks
lithops
lekythos
lathyrus
loranthus
limnanthes
lecythis
lithodoras
Starts with M
9 words mythos
meathooks
metathesis
miscanthus
mythopoesis
mythogenesis
melianthus
macrothelypteris
macracanthorhynchus
Starts with N
7 words nepenthes
neurotherapeutics
nearthrosis
nephthytis
nyctanthes
narcocatharsis
nematanthus
Starts with O
19 words orthotics
osmanthus
osteoarthrosis
orthosis
opisthotonos
ornithorhynchus
orthomyxovirus
orthros
ozothamnus
odontornithes
opisthodomos
ophthalmomycosis
ophthalmodiagnosis
ophthalmomyositis
ophthalmoneuritis
orthoaxis
orthrosanthus
olecranarthritis
ophthalmorrhexis
Starts with P
24 words prosthetics
parenthesis
prosthesis
pathogenesis
pothos
polyanthus
porthos
paranthropus
pithos
pythoness
polyarthritis
prothesis
pithecanthropus
pantheress
phlebothrombosis
pithiviers
plectranthus
prothallus
pseudarthrosis
pseudoarthrosis
panophthalmitis
phototherapeutics
parathesis
parasynthesis
Starts with R
2 words resynthesis
rhinanthus
Starts with S
23 words synthesis
smithereens
smithers
spondylolisthesis
synarthrosis
schizanthus
spondylarthritis
sinanthropus
spiranthes
saurornithes
sialolithiasis
sivapithecus
struthiopteris
strobilanthes
strophanthus
synthronus
sarothamnus
synthyris
synanthesis
scyphanthus
streptothricosis
siphonognathus
spondylexarthrosis
Starts with T
24 words thanks
thesis
thickness
threads
thirties
thesaurus
therapeutics
throes
theatrics
thermals
thermos
thalamus
thrombosis
thymus
thoughtlessness
thematics
thrips
thrombolysis
thrombus
thallus
thyroiditis
thyrotoxicosis
thoracentesis
thrombophlebitis
Starts with U
3 words underthings
urethritis
urolithiasis
Starts with W
2 words withers
weatherglass
Starts with X
6 words xanthomatosis
xanthomonas
xanthocephalus
xyrichthys
xanthoxalis
xanthoceras
Starts with Z
2 words zinjanthropus
zephyranthes