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

cosech

cosecs

coshed

cosier

cosies

cosing

cosmea

cosmid

cosmin

cosmos

cosses

cossie

costae

costal

costed

coster

costes

costus

See all 6-letter COS-words

7-Letter Words Starting With COS

Common 7-letter COS-words:

costume

cosechs

coshers

coshery

cosiers

cosiest

cosines

cosmids

cosmine

cosmins

cosmist

cosmoid

cossack

cossets

cossies

costard

costars

costers

costrel

cosying

See all 7-letter COS-words

8-Letter Words Starting With COS

Common 8-letter COS-words:

costumes

coscript

cosigned

cosiness

cosleeps

cosmeses

cosmetic

cosmines

cosmists

cosmoses

costally

costards

costeans

costings

costless

costlier

costmary

costrels

costumer

costuses

See all 8-letter COS-words

9-Letter Words Starting With COS

Common 9-letter COS-words:

cosecants

coseismal

cosheries

coshering

cosigning

cosleeped

cosmocrat

cosmogeny

cosmogony

cosmology

cosphered

cosseting

costalgia

costarred

costeaned

costively

costliest

costotomy

costumier

costuming

See all 9-letter COS-words

10-Letter Words Starting With COS

Common 10-letter COS-words:

coscripted

coseismics

cosentient

cosherings

cosleeping

cosmically

cosmodrome

cosmogenic

cosmogonal

cosmogonic

cosmolatry

cosmolines

cosmologic

cosmonauts

cosmopolis

cosmoramic

cosplaying

costalgias

costarring

costumings

See all 10-letter COS-words

11-Letter Words Starting With COS

Common 11-letter COS-words:

coscenarist

coscripting

cosignatory

cosmetician

cosmeticise

cosmeticism

cosmetology

cosmodromes

cosmogonies

cosmogonist

cosmography

cosmolining

cosmologies

cosmologist

cosmopolite

cosmosphere

cosmotheism

cosponsored

costeanings

costotomies

See all 11-letter COS-words

12-Letter Words Starting With COS

Common 12-letter COS-words:

cosmetically

cosmeticians

cosmeticised

cosmeticizes

cosmogenesis

cosmogenetic

cosmogonical

cosmogonists

cosmographer

cosmolatries

cosmologists

cosmoplastic

cosmopolises

cosmopolites

cosmopolitic

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

cosmopolitans

cosmopolitics

cosmopolitism

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 "cosignificative" 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 "cosecants", "coseismal", "cosheries", "coshering", "cosigning".