UNUSUAL WORDS  I

Words containing the consecutive letters EO:

PEONY

VIDEO

THEORY

LEOTARD

GALLEON

Words containing the consecutive letters TZ:

BLITZ

BLINTZ

DITZY

ERSATZ

PRETZEL

CHUTZPA

Words of at least five letters containing only the vowel Y:

NYMPH

MYTHS

HYMNS

GYPSY

MYRRH

RHYTHM

Two words with only vowel U:

CUMULUS

AUGUSTUS

Words with two sets of double E's:

FREEWHEELING

BEEKEEPER

SQUEEGEE

TEEPEE

Words with all five vowels in consecutive order:

FACETIOUS

ABSTEMIOUS

Shortest words with all five vowels:
SEQUOIA - 7 letters - 4 consecutive vowels
EQUATION - 8 letters
DIALOGUE
EUPHORIA

Words with four vowels in a row:

SEQUOIA

QUEUE

HAWAIIAN (five if you count W)

Words with double A:
AARON
AARDVARK
BAZAAR

Words starting with double E:
EEL
EERIE

Words with double I:

SKIING

HAWAII

RADII

TAXIING

ANTI-ITCH (cream)

SHIISM (branch of Islam)

WII (video game name)

MAUI ISLAND

Word starting with double L:
LLAMA

Words starting with double O:
OOZE
OOPS
OOMPH
OOMPAH
OOLONG

Words with double U:

VACUUM

CONTINUUM

Words with double H:
HITCHHIKE
FISHHOOK
WITHHOLD

Word with double V:
SAVVY

Words with double W:
BOWWOW
POWWOW

Only word with three sets of consecutive double letters:
BOOKKEEPER

Words that begin with DW:

DWIGHT

DWAYNE

DWEEB

DWELL

DWARF

DWINDLE

Longest word with only one vowel:

STRENGTHS

Longest (9-letter) single-syllable words:

STRENGTHS/SCREECHED/STRETCHED/SCRATCHED/STRAIGHTS/SCRUNCHED

Word with four S's and four I's
MISSISSIPPI 

Words with four I's
MISSISSIPPI
INDIVISIBLE 

Words with five S's:

ASSESSES

ASSASSINS

Only word ending in MT:

DREAMT

Words that can be spelled with any vowel as second letter:
PAT
BAG

DAN
PACK

LAST

BALL

MATE

MASS