Root words of 8 letters or fewer beginning with a number or metric prefix (UNI, TETRA, PENTA, HEXA, OCTA, OCTO, DECA, CENTI, MILLI, KILO) with definitions
Jump to: Words Starting with UNI- · Words Starting with TETRA- · Words Starting with PENTA- · Words Starting with HEXA- · Words Starting with OCTA- · Words Starting with OCTO- · Words Starting with DECA- · Words Starting with CENTI- · Words Starting with MILLI- · Words Starting with KILO-
128 total entries across 10 section(s)
Note: this list is built from spelling, not meaning. Some words here begin with the right letters but do not really use the prefix in its usual sense. They are included on purpose: for Scrabble we suggest learning the prefix as a letter pattern rather than learning the meanings.
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | UNIFY | — | [v. -FIED, -FYING, -FIES] · to make into a coherent whole / [x] { unified unifies unify § unific unified unifying } |
| B | UNION | S | [n. -S] · a number of persons, parties, or political entities united for a common purpose |
| DG | UNITE | DRS | [v. UNITED, UNITING, UNITES] · to bring together so as to form a whole - UNITEDLY [b.] |
| — | UNITY | — | [n. -TIES] · the state of being one single entity / [x] { oneness unity § onenesses unities } |
| — | UNICED | — | [a.] · not covered with icing |
| — | UNICOM | S | [n. -S] · a radio communications system at some airports |
| — | UNICUM | — | [n. -CA] · a unique example or specimen |
| — | UNIFIC | — | [a.] · unifying / [x] { unified unifies unify § unific unified unifying } |
| — | UNIPOD | S | [n. -S] · a one-legged~ support |
| — | UNIQUE | RS | [a. UNIQUER, UNIQUEST] · existing as the only one of its kind; very unusual - UNIQUELY [b.] / ----- [n. -S] · something that is unique |
| — | UNISEX | — | [n. -ES] · the condition of not being distinguishable as to sex |
| — | UNISON | S | [n. -S] · complete agreement - UNISONAL [a.] / [x] { unison § unisons § unisonal unisonant unisonous } |
| — | UNITER | S | [n. -S] · one that unites |
| — | UNIBODY | — | [n. -DIES] · a single molded unit that forms the bodywork and chassis of a vehicle (=unibodies) |
| — | UNIBROW | S | [n. -S] · a single continuous eyebrow formed when hair grows above the bridge of the nose |
| — | UNICORN | S | [n. -S] · a mythical horselike creature |
| — | UNIDEAL | — | [a.] · not ideal |
| — | UNIFACE | S | [n. -S] · a coin having a design on only one side |
| — | UNIFIER | S | [n. -S] · one that unifies |
| C | UNIFORM | S | [a. -FORMER, -FORMEST] · unchanging / ----- [v. -ED, -ING, -S] · to make uniform |
| — | UNISIZE | — | [a.] · made to fit all sizes |
| — | UNITAGE | S | [n. -S] · amount in units |
| — | UNITARD | S | [n. -S] · a leotard that also covers the legs |
| — | UNITARY | — | [a.] · pertaining to a unit |
| P | UNITIVE | — | [a.] · serving to unite |
| — | UNITIZE | DRS | [v. -IZED, -IZING, -IZES] · to divide into units |
| — | UNIALGAL | — | [a.] · pertaining to a single algal cell |
| — | UNIAXIAL | — | [a.] · having one axis |
| — | UNICOLOR | — | [a.] · of one color |
| — | UNICYCLE | DS | [v. -CLED, -CLING, -CLES] · to ride a one-wheeled~ vehicle (=unicycled unicycling) / [x] { monocycle unicycle § monocycles unicycles § unicycled unicycles unicycling } |
| — | UNIDEAED | — | [a.] · lacking ideas |
| — | UNIFILAR | — | [a.] · having only one thread, wire, or fiber |
| — | UNILOBED | — | [a.] · having one lobe |
| — | UNIMBUED | — | [a.] · being not imbued + |
| — | UNIMODAL | — | [a.] · having or involving one mode |
| — | UNINSTAL | LS | [v. -STALLED, -STALLING, -STALS] · to remove a file or an application from a computer (=uninstal uninstals) / [x] { uninstalls § uninstal uninstall uninstalled uninstalling uninstalls uninstals § uninstalled } |
| — | UNIONISE | DS | [v. -ISED, -ISING, -ISES] · to unionize / [x] { unionise unionised unionises unionising unionize unionized unionizes unionizing § unionised unionized } |
| — | UNIONISM | S | [n. -S] · the principle of forming a union |
| — | UNIONIST | S | [n. -S] · an advocate of unionism |
| — | UNIONIZE | DRS | [v. -IZED, -IZING, -IZES] · to form into a union / [x] { unionise unionised unionises unionising unionize unionized unionizes unionizing § unionised unionized } |
| — | UNIPOLAR | — | [a.] · showing only one kind of polarity |
| — | UNIRONED | — | [a.] · being not ironed + |
| — | UNIRONIC | — | [a.] · not ironic + |
| — | UNISSUED | — | [a.] · being not issued + |
| — | UNITIZER | S | [n. -S] · one that unitizes «to divide into units» |
| — | UNITRUST | S | [n. -S] · a type of annuity trust |
| — | UNIVALVE | DS | [n. -S] · a mollusk having a single shell |
| — | UNIVERSE | S | [n. -S] · the totality of all existing things |
| — | UNIVOCAL | S | [n. -S] · a word having only one meaning |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | TETRACID | S | [n. -S] · a type of acid |
| — | TETRAGON | S | [n. -S] · a four-sided~ polygon |
| — | TETRAMER | S | [n. -S] · a type of polymer |
| — | TETRAPOD | S | [n. -S] · a four-footed~ animal |
| — | TETRARCH | SY | [n. -S] · one of four joint rulers |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | PENTANE | S | [n. -S] · a volatile liquid |
| — | PENTACLE | S | [n. -S] · a five-pointed~ star |
| — | PENTAGON | S | [n. -S] · a five-sided~ polygon |
| — | PENTANOL | S | [n. -S] · an alcohol |
| — | PENTARCH | SY | [n. -S] · one of five joint rulers |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | HEXADE | S | [n. -S] · hexad «a group of six» / [x] { hexad hexade § hexades hexads § hexadic } |
| — | HEXANE | S | [n. -S] · a volatile liquid |
| — | HEXAGON | S | [n. -S] · a polygon having six sides |
| — | HEXAPLA | RS | [n. -S] · an edition in which six texts are set in parallel columns - HEXAPLAR [a.] |
| — | HEXAPOD | SY | [n. -S] · a six-legged~ insect |
| — | HEXAGRAM | S | [n. -S] · a six-pointed~ star |
| — | HEXAMINE | S | [n. -S] · a chemical compound |
| — | HEXAPODY | — | [n. -DIES] · a line of verse with six feet |
| — | HEXARCHY | — | [n. -CHIES] · a group of six separate states |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | OCTANE | S | [n. -S] · a liquid hydrocarbon |
| — | OCTANT | S | [n. -S] · an eighth of a circle - OCTANTAL [a.] |
| — | OCTAVE | S | [n. -S] · a type of musical interval - OCTAVAL [a.] / [x] { octave ottava § octaves ottavas § octaves § octaval } |
| — | OCTAVO | S | [n. -VOS] · a page size / [x] { eightvo octavo § eightvos octavos } |
| — | OCTAGON | S | [n. -S] · an eight-sided~ polygon / [x] { octagon octangle § octagons octangles } |
| — | OCTANOL | S | [n. -S] · an alcohol |
| — | OCTANGLE | S | [n. -S] · an octagon / [x] { octagon octangle § octagons octangles } |
| — | OCTARCHY | — | [n. -TARCHIES] · a government by eight persons |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | OCTOPOD | S | [n. -S] · any of an order of eight-armed~ mollusks / [x] { octopodans octopods § octopod octopodan } |
| — | OCTOPUS | — | [n. -PUSES, -PI, or -PODES] · a nocturnal octopod / [x] { octopi octopodes octopus octopuses § octopus } |
| — | OCTONARY | — | [n. -NARIES] · a stanza of eight lines |
| — | OCTOPOID | — | [a.] · resembling an octopus |
| — | OCTOROON | S | [n. -S] · a person of one-eighth~ black ancestry |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | DECADE | S | [n. -S] · a period of ten years - DECADAL [a.] |
| — | DECAMP | S | [v. -ED, -ING, -S] · to depart from a camping ground |
| — | DECANE | S | [n. -S] · a hydrocarbon |
| — | DECANI | — | [a.] · to be sung by the right side of the choir |
| — | DECANT | S | [v. -ED, -ING, -S] · to pour from one container into another |
| — | DECARE | S | [n. -S] · dekare «a measure equal to ten ares» / [x] { decare dekare § decares dekares } |
| — | DECAGON | S | [n. -S] · a ten-sided~ polygon |
| — | DECALOG | S | [n. -S] · the Ten Commandments / [x] { decalog decalogue § decalogs decalogues } |
| — | DECANAL | — | [a.] · pertaining to a dean |
| — | DECAPOD | S | [n. -S] · a ten-legged~ crustacean |
| — | DECAYER | S | [n. -S] · one that decays |
| — | DECADENT | S | [n. -S] · one in a state of mental or moral decay |
| — | DECAGRAM | S | [n. -S] · dekagram «a measure equal to ten grams» / [x] { decagram dekagram § decagrams dekagrams } |
| — | DECANTER | S | [n. -S] · a decorative bottle |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | CENTILE | S | [n. -S] · a value of a statistical variable |
| — | CENTIME | S | [n. -S] · the 100th part of a franc |
| — | CENTIMO | S | [n. -MOS] · any of various small coins |
| — | CENTIARE | S | [n. -S] · centare «a measure of land area» / [x] { centare centiare § centares centiares } |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | MILLIER | S | [n. -S] · a unit of weight |
| — | MILLIME | S | [n. -S] · a coin of Tunisia~ |
| — | MILLINE | RS | [n. -S] · a unit of advertising space |
| — | MILLING | S | [n. -S] · a corrugated edge on a coin / [x] { milles mills § milled milling mills § millable milled } |
| — | MILLION | S | [n. -S] · a number |
| — | MILLIAMP | S | [n. -S] · one thousandth of an ampere |
| — | MILLIARD | S | [n. -S] · a billion |
| — | MILLIARE | S | [n. -S] · a unit of area |
| — | MILLIARY | — | [n. -ARIES] · an ancient Roman milestone |
| — | MILLIBAR | S | [n. -S] · a unit of atmospheric pressure |
| — | MILLIEME | S | [n. -S] · unit of value of Egypt~ and Sudan~ |
| — | MILLIGAL | S | [n. -S] · a unit of acceleration |
| — | MILLILUX | — | [n. -LUXES or -LUCES] · a unit of illumination |
| — | MILLIMHO | S | [n. -MHOS] · a unit of electrical conductance |
| — | MILLINER | SY | [n. -S] · one who makes or sells women's hats |
| — | MILLIOHM | S | [n. -S] · a unit of electrical resistance |
| — | MILLIPED | ES | [n. -S] · a multi-legged~ arthropod / [x] { milleped millepede milliped millipede § millepedes millepeds millipedes millipeds } |
| — | MILLIREM | S | [n. -S] · a quantity of ionizing radiation |
| FRONT | WORD | BACK | DEFINITION |
|---|---|---|---|
| — | KILOBAR | S | [n. -S] · a unit of atmospheric pressure |
| — | KILOBIT | S | [n. -S] · a unit of computer information |
| — | KILORAD | S | [n. -S] · a unit of nuclear radiation |
| — | KILOTON | S | [n. -S] · a unit of weight |
| — | KILOBASE | S | [n. -S] · unit of measure of a nucleic-acid~ chain |
| — | KILOBAUD | S | [n. -S] · a unit of data transmission speed |
| — | KILOBYTE | S | [n. -S] · 1,024 bytes |
| — | KILOGRAM | S | [n. -S] · a unit of mass and weight |
| — | KILOMOLE | S | [n. -S] · one thousand moles |
| — | KILOVOLT | S | [n. -S] · a unit of electromotive force |
| — | KILOWATT | S | [n. -S] · a unit of power |
Copyright © 2026 Mitch Bayersdorfer · AGPL-3.0 · Thanks to Joe Petree for his definitions for these lists. · Detailed Attributions