Words That Start With COS

There are over 277 words that begin with COS in English. From 3-letter words to 15-letter entries, find COS-words grouped and sortable by length below, all valid in Scrabble, Wordle, and Words With Friends. You can also see five letter words starting with COS.

3-Letter Words Starting With COS

Short high-frequency COS-words:

cos

4-Letter Words Starting With COS

Common 4-letter COS-words:

cost

cose

cosh

coss

cosy

See all 4-letter COS-words

5-Letter Words Starting With COS

Common 5-letter COS-words:

costs

costa

cosec

cosed

coses

coset

cosey

cosie

cosmo

coste

See all 5-letter COS-words

6-Letter Words Starting With COS

Common 6-letter COS-words:

costly

cosmic

cosets

coshed

cosher

coshes

cosier

cosies

cosily

cosing

cosmid

cosmin

cosmos

cosses

cosset

cossie

costae

costal

costes

costus

See all 6-letter COS-words

7-Letter Words Starting With COS

Common 7-letter COS-words:

costume

coshery

cosiers

cosmeas

cosmins

cosmist

cosmoid

cosplay

cossack

cossets

costals

costard

costars

costate

costean

costers

costing

costive

costrel

cosying

See all 7-letter COS-words

8-Letter Words Starting With COS

Common 8-letter COS-words:

costumes

coscript

coshered

cosigned

cosiness

cosmeses

cosmesis

cosmetic

cosmical

cosmines

cosmisms

cosmists

cosmoses

cosplays

costally

costated

costrels

costumed

costumer

costumey

See all 8-letter COS-words

9-Letter Words Starting With COS

Common 9-letter COS-words:

coscoroba

coseismic

cosigners

cosleeped

cosmocrat

cosmogony

cosmonaut

cosmotron

cosphered

cosplayer

cosponsor

cosseting

cossetted

costarred

costively

costliest

costotomy

costumers

costumier

costuming

See all 9-letter COS-words

10-Letter Words Starting With COS

Common 10-letter COS-words:

coseismals

cosinesses

cosmocrats

cosmodrome

cosmogonal

cosmogonic

cosmolatry

cosmolines

cosmologic

cosmopolis

cosmoramas

cosmoramic

cosmotrons

cosplayers

cossetting

costalgias

costarring

costeaning

costliness

costumings

See all 10-letter COS-words

11-Letter Words Starting With COS

Common 11-letter COS-words:

coscenarist

coscripting

cosignatory

cosmeticise

cosmeticism

cosmocratic

cosmodromes

cosmogenies

cosmogonies

cosmogonist

cosmography

cosmolining

cosmologies

cosmologist

cosmotheism

cosmothetic

cosplayings

cosponsored

costotomies

costumeries

See all 11-letter COS-words

12-Letter Words Starting With COS

Common 12-letter COS-words:

coscenarists

coscinomancy

cosmeticians

cosmeticised

cosmeticisms

cosmochemist

cosmogonical

cosmogonists

cosmographer

cosmographic

cosmological

cosmoplastic

cosmopolises

cosmopolitan

cosmopolites

cosmospheres

cosmotheisms

costermonger

costlinesses

cosurfactant

See all 12-letter COS-words

13-Letter Words Starting With COS

Common 13-letter COS-words:

cosignatories

cosmeceutical

cosmeticising

cosmeticizing

cosmeticology

cosmetologies

cosmetologist

cosmochemical

cosmochemists

cosmographers

cosmographies

cosmographist

cosmopolitics

cosmopolitism

cosmothetical

cosponsorship

costardmonger

costermongers

costivenesses

cosurfactants

See all 13-letter COS-words

14-Letter Words Starting With COS

Common 14-letter COS-words:

coscinomancies

cosmeceuticals

cosmetological

cosmetologists

cosmochemistry

cosmogenesises

cosmographical

cosmographists

cosmologically

cosmopolitical

cosmopolitisms

cosponsorships

costardmongers

See all 14-letter COS-words

15-Letter Words Starting With COS

Common 15-letter COS-words:

cosignificative

cosmeticologies

cosmopolitanise

cosmopolitanism

cosmopolitanize

See all 15-letter COS-words

277 Common Words Starting with COS

Most Common Length

Avg Scrabble Score

(out of 30)

Most Common Ending

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What is the highest scoring word in
Scrabble that starts with COS?

30 Points

The highest scoring word in Scrabble that starts with COS is cosmopolitanize with a total of 30 points.

C 3

O 1

S 1

M 3

O 1

P 3

O 1

L 1

I 1

T 1

A 1

N 1

I 1

Z 10

E 1

verb 1. make familiar with and at ease in many different countries and cultures

Words that begin with COS are commonly used for word games like Scrabble and Words with Friends. This list will help you to find the top scoring words to beat the opponent. You can also find a list of all words that end in COS and words with COS. Try our five letter words starting with COS page if you’re playing Wordle-like games or use the New York Times Wordle Solver for finding the NYT Wordle daily answer.

FAQ Words That Start With COS

How many words starting with COS are in the English dictionary?

There are 277 words in the English dictionary that start with COS, and most of them are 9 letters long (36 words of that length).
What's the longest word starting with COS?

The longest word starting with COS is "cosmopolitanism" at 15 letters long. If you're looking for a more everyday word, "costumes" is the longest common word starting with COS.
Are there any rare words starting with COS worth more in Scrabble?

Yes. Uncommon words like "cosmopolitanize", "cosmeticize", "cosmeticizing", "cosmeticized" start with COS and can score big thanks to their unusual letters. "cosmopolitanize" is worth 30 points in Scrabble before any bonus tiles.
What are the most common words starting with COS?

Most words starting with COS are 9 letters long, including everyday words like "coscoroba", "coseismic", "cosigners", "cosleeped", "cosmocrat".