theory
A description of an event or system that is considered to be accurate.
A coherent statement or set of ideas that explains observed facts or phenomena and correctly predicts new facts or phenomena not previously observed, or which sets out the laws and principles of something known or observed; a hypothesis confirmed by observation, experiment etc.
The underlying principles or methods of a given technical skill, art etc., as opposed to its practice.
A field of study attempting to exhaustively describe a particular class of constructs.
A set of axioms together with all statements derivable from them; or, a set of statements which are deductively closed. Equivalently, a formal language plus a set of axioms (from which can then be derived theorems). The statements may be required to all be bound (i.e., to have no free variables).
The standardization and study of fixed sequences of moves, especially in the opening phase of a game.
Mental conception; reflection, consideration.
A hypothesis or conjecture.

theosopher
A theosophist.

theosophers
plural of theosopher

thiefs
plural of thief

thoft
A rowing-bench.

tiderip
Synonym of riptide.

tiderips
plural of tiderip

timar
A fiefdom in the Ottoman Empire granted by the Sultan to a spahi in exchange for his cavalryman service and cultivated by villeins who leased it from him.

timars
plural of timar

tirewoman
A lady's handmaid.
A female dresser in a theatre; a wardrobe assistant.

tirewomen
plural of tirewoman

toluylene
stilbene
tolylene

toothcomb
A comb with finely spaced teeth, chiefly as a metaphorical means of making a thorough search.

toothcombs
plural of toothcomb

topic
topical

topick
Obsolete form of topic.

topicks
plural of topick

topics
plural of topic

tores
plural of tore

toughra
Alternative spelling of tughra.

toughras
plural of toughra

toxin
A toxic substance, specifically a poison produced by the biological processes of organisms.
Synonym of toxicant: a toxic substance in a body requiring removal.

toxine
Archaic form of toxin.

toxines
plural of toxine

toxins
plural of toxin

transcribbler
A poor transcriber.

transcribblers
plural of transcribbler

transcribers
plural of transcriber

transcriptor
transcriber

transcriptors
plural of transcriptor

transfrag
A transcribed fragment (of DNA)

transfrags
plural of transfrag

translater
Alternative form of translator.

translaters
plural of translater

travelblog
A blog describing the author's travels.

travelblogs
plural of travelblog

travesties
plural of travesty

travesty
An absurd, grotesque, misrepresentative or grossly inferior likeness or imitation.
A pastiche, parody, or stylistic imitation; a burlesque literary or artistic imitation (typically of a more serious work).
An appalling event, situation or outcome (especially in relation to another outcome to which it is grossly inferior).

trepidation
Anxiety over the uncertain future or possible ill-occurrence.
An involuntary trembling, sometimes an effect of paralysis, but usually caused by terror or fear.
A libration of the starry sphere in the Ptolemaic system; a motion ascribed to the firmament, to account for certain small changes in the position of the ecliptic and of the stars.

trepidations
plural of trepidation

triazabicyclo
used attributively to describe a compound having three nitrogen atoms in two rings

trichordos
plural of trichordo

tridarn
A kind of cupboard or dresser with three tiers.

tridarns
plural of tridarn

trilbies
plural of trilby

trilby
narrow-brimmed type of felt hat, described as having a "shorter brim which is angled down at the front and slightly turned up at the back" in comparison to the fedora

trilbys
plural of trilby

trioxalate
A salt containing three equivalents of oxalic acid to one equivalent of the basic element (or to one equivalent of a univalent basic radical).
An acid salt of oxalic acid, containing one basic atom and three equivalents of oxalic acid.

trisnitrate
A nitrate formed from three molecules of nitric acid.
A basic nitrate.

trisnitrates
plural of trisnitrate

tsifteteli
A sensuous belly dance of Turkish origin, that is found in many of the territories of the former Ottoman Empire, particularly Greece.

tsiftetelia
plural of tsifteteli

tubatoxin
rotenone

tubatoxins
plural of tubatoxin

tuft
A bunch of feathers, grass or hair, etc., held together at the base.
A cluster of threads drawn tightly through upholstery, a mattress or a quilt, etc., to secure and strengthen the padding.
A small clump of trees or bushes.
A gold tassel on the cap worn by titled undergraduates at English universities.
A person entitled to wear such a tassel.

tuftings
plural of tufting

tufts
plural of tuft

tughra
A calligraphic signature of an Ottoman sultan (and some other rulers to the present day) that was affixed to official documents, carved on his seal, and stamped on coins and inscribed on some stamps issued during his reign.

tughras
plural of tughra

tugra
Alternative form of tughra.

tugras
plural of tugra

turbeh
A small mausoleum built over the grave of a high-ranking or holy Muslim, especially under the Ottomans.

turbehs
plural of turbeh

twigwork
Architectural details constructed of twigs and branches to form decorative motifs in buildings and furniture.

tyrbe
Alternative form of turbeh.

tyrbes
plural of tyrbe

unaliver
Killer, murderer.

unalivers
plural of unaliver

underblanket
A blanket placed directly on the mattress of a bed.

underblankets
plural of underblanket

underscribe
A lower-ranking scribe; an assistant scribe.

underscribes
plural of underscribe

underslopes
plural of underslope

uninstallment
Synonym of uninstallation.

unparticle
Used attributively to describe a form of physics that describes matter in terms other than of particles

unparticles
plural of unparticle

unsub
Abbreviation of unknown subject of an investigation..

unsubs
plural of unsub

unsubscribers
plural of unsubscriber

unsubscribes
third-person singular simple present indicative of unsubscribe

updraughts
plural of updraught

upgradation
Upgrade; upgrading.

upgradations
plural of upgradation

upholdstery
Obsolete form of upholstery.

upholsteries
plural of upholstery

upholsterings
plural of upholstering

upholstery
The craft or business of upholstering furniture.
The materials used in upholstering furniture.

upholstries
plural of upholstry

upholstry
Archaic form of upholstery.

urosternite
The sternal or lower of any of the segments of insects and other arthropods, often described as genitalia.

urosternites
plural of urosternite

usheress
female usher

ustav
The earliest style of Cyrillic writing developed from Greek uncial in the late 9th century, predominant in the 11th–14th centuries.
A church statute prescribing daily prayer, feast days, and fasts.

ustavs
plural of ustav

valvulae
plural of valvula
plural of valvule

vanitories
plural of vanitory

vanitory
A dressing table with a built-in washbasin.

vargueno
A decorative cabinet of a kind originating near Toledo in Spain, having a rectangular body supported on legs or an ornamental framework, and a front that opens downwards on hinges to serve as a writing desk.

varguenos
plural of vargueno

vazir
Dated form of vizier.

vazirs
plural of vazir

veganite
A vegan.

veganites
plural of veganite

vestiarium
vestry
wardrobe

vezir
Dated form of vizier.

vezirs
plural of vezir

vicennalias
plural of vicennalia

viewdata
An information retrieval service of the 1970s and 1980s permitting subscribers to access a remote database and receive requested data on a video display.

viewdatas
plural of viewdata

vimana
A mythological flying palace or chariot described in Hindu texts and Sanskrit epics.
The tower above the garbhagriha in a Hindu temple.

vimanas
plural of vimana

vizeer
Alternative spelling of vizier.