WIKI
Leaving out the Italian (rigatoni, vermicelli, etc.), and other foreign words (tabi, pachisi, swami), and names/proper nouns (Bambi, Hopi), some of the more common include:
bikini
safari
fungi(there are many -us words that pluralize to -i, e.g. cacti, syllabi, stimuli, etc.)
quasi
wasabi
alibi
rabbi
graffiti
yeti
confetti
origami
tsunami
chili
deli
lei
ennui
taxi
When you skip foreign words, proper nouns, and plural forms, the list is pretty limited, indeed.
agouti
alkali
alumni
annuli
banzai
bikini
bonsai
borzoi
chichi
cumuli
humeri
kabuki
lazuli
litchi
nuclei
papyri
phalli
pirogi
pylori
safari
salami
satori
scampi
solidi
tatami
wapiti
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 354 words with the pattern --I-. That is, four letter words with 3rd letter I. In alphabetical order, they are:
abid
acid
adit
agin
agio
ahis
akin
alif
alit
amia
amid
amie
amin
amir
amis
anil
anis
aria
arid
aril
aris
avid
axil
axis
ayin
bail
bait
bein
blin
blip
boil
bois
brie
brig
brik
brim
brin
brio
bris
brit
buik
caid
cain
ceil
chia
chib
chic
chid
chik
chin
chip
chis
chit
chiv
chiz
clip
coif
coil
coin
coir
coit
crib
crim
cris
crit
cuif
cuit
dais
deid
deif
deil
djin
doit
drib
drip
duit
edit
egis
emic
emir
emit
epic
eric
etic
evil
exit
faik
fail
fain
fair
faix
feis
flic
flim
flip
flir
flit
flix
foid
foil
foin
frib
frig
fris
frit
friz
gaid
gain
gair
gait
geit
ghis
glia
glib
glid
glim
glit
grid
grig
grim
grin
grip
gris
grit
guid
haik
hail
hain
hair
heid
heil
heir
hoik
huia
huic
huis
ibis
ilia
imid
inia
irid
iris
isit
iwis
ixia
jail
join
kaid
kaie
kaif
kaik
kail
kaim
kain
kais
keir
khis
klik
knit
kois
kris
kuia
laic
laid
laik
lain
lair
leir
leis
loid
loin
loir
luit
maid
maik
maim
main
mair
mein
moil
moit
muid
muil
muir
naif
naik
nail
nain
neif
noil
noir
obia
obis
obit
odic
ohia
olid
olio
omit
onie
otic
oxid
oxim
paid
paik
pail
pain
pair
pais
pein
phis
phiz
plie
plim
pois
prig
prim
psis
puir
pyic
pyin
qaid
quid
quim
quin
quip
quit
quiz
raia
raid
raik
rail
rain
rais
rait
reif
reik
rein
reis
roil
roin
ruin
saic
said
sail
saim
sain
sair
sais
seif
seik
seil
seir
seis
shim
shin
ship
shir
shit
shiv
skid
skim
skin
skio
skip
skis
skit
slid
slim
slip
slit
smir
smit
snib
snig
snip
snit
soil
spic
spie
spif
spik
spim
spin
spit
spiv
sris
stie
stim
stir
suid
suit
swig
swim
swiz
taig
tail
tain
tais
tait
teil
thig
thin
thio
thir
this
toil
toit
trie
trig
trim
trin
trio
trip
tuis
twig
twin
twit
tyin
unis
unit
uric
utis
vail
vain
vair
veil
vein
void
vril
waid
waif
wail
wain
wair
wais
wait
weid
weil
weir
whid
whig
whim
whin
whio
whip
whir
whit
whiz
writ
ywis
zein
zoic
Some four letter words that end with "o" are:zerohaloherohobointojudokiloalsoaltoautoechomemoontopolosilosolotacotarotrioundoveto
Some four letter words that end in H are:bathwashwishbashhashhushmushpithmythhathpushpath
Some four letter words ending with T are:baitbeetbeltbentblotboatbootbuntcantcartcastchatclotcoltcultcurtdartdentdirtdoltdusteastfactfastfeetfeltfestfistfootfortfretgaitgiltglutgnathaltheathefthilthoothosthuntjestjiltjustkeptkiltknitknotlastlentlintlistlootlostlustMaltmartmastmeatmeetmintmistmoltmootmostmustneatnestomitoustpantpartpastpeatpentpestpintpoetportpuntquitraftrantrentriftrootruntrustSaltseatsentsiftsiltskitsnitsootsortspitspotsuetswattartteattenttestthattinttoottorttrotunitvastventvestvoltwaitwantwartwattweftweltwentweptwestwhetwiltyurt
Some four letter words that end in 'is' are:axisibisiristhis
dazedozefazegazehazelazemazerazesizetaze
spaz
Some four letter words ending in L are:ballbellbillboilbullcallcellcoilcoolcurlearlfailfallfeelfellfillfoilfoolfoulfowlfullgallgoalgillgullhallhailheelhellhillhulljelljailjowlkeelkilllolllullmallmailmealmillmoilmullnailnullpailpallpeelpillpollpoolpurlrailreelrollsailsealsellsillsoiltailtalltealtelltoiltooltollveilwailwallwealwellwillyellzeal
Some four letter words starting with S and ending with F are:selfserfsurf
help, kelp, yelp
zapp
Some four letter words starting with A are:ableacreafarajaralsoaltoareaAsiaautoaxle
Some four letter words beginning with P and ending with S:PadsPalsPansPapsParsPassPatsPawsPaysPeasPecsPegsPensPepsPetsPewsPicsPiesPigsPinsPipsPitsPlusPodsPolsPomsPopsPotsProsPubsPudsPugsPunsPupsPuts