10-letter words containing e, s, r, o
- coryphaeus — (in ancient Greek drama) the leader of the chorus
- cosherings — (in Ireland) visits to tenants' houses by a chief and his followers, where they would expect to be fed and accommodated
- cosmodrome — a site, esp one in the former Soviet Union, from which spacecraft are launched
- cospectral — (mathematics) isospectral.
- cost price — If something is sold at cost price, it is sold for the same price as it cost the seller to buy it.
- cost-share — to share the cost of: to cost-share a joint venture.
- costumiers — Plural form of costumier.
- cotransfer — a simultaneous transfer of multiple genes
- cotterless — (of a machine) having no cotter
- cottierism — (in Ireland) the system of cottier tenure
- counseller — Archaic spelling of counsellor.
- counsellor — A counsellor is a person whose job is to give advice to people who need it, especially advice on their personal problems.
- counselors — Plural form of counselor.
- counselour — Alternative form of counselor.
- counterspy — a spy working against or investigating enemy espionage
- countersue — to sue (a plaintiff) in response or opposition to a preceding lawsuit
- courageous — Someone who is courageous shows courage.
- courgettes — Plural form of courgette.
- coursebook — a book studied on an educational course
- coursemate — One who is taking the same academic course.
- courseware — computer software designed to be used in an educational course
- coursework — written or oral work completed by a student within a given period, which is assessed as an integral part of an educational course
- court case — a legal action
- court shoe — Court shoes are women's shoes that do not cover the top part of the foot and are usually made of plain leather with no design.
- courtesans — Plural form of courtesan.
- courtesies — excellence of manners or social conduct; polite behavior.
- courthouse — A courthouse is a building in which a court of law meets.
- courtliest — Superlative form of courtly.
- couturiers — Plural form of couturier.
- covariates — Plural form of covariate.
- cover slip — Microscopy. cover glass.
- covertness — concealed; secret; disguised.
- covertures — Plural form of coverture.
- cowardness — Synonym of cowardice.
- cowberries — Plural form of cowberry.
- cowpersons — Plural form of cowperson.
- crab louse — a parasitic louse, Pthirus (or Phthirus) pubis, that infests the pubic region in humans
- crackhouse — a place where cocaine in the form of crack is bought, sold, and smoked.
- cradlesong — a lullaby
- cream soda — a carbonated soft drink flavoured with vanilla
- creepmouse — an informal tickling game played with small children
- cremations — Plural form of cremation.
- crepe sole — a shoe sole made of crepe rubber
- crescendos — Plural form of crescendo.
- cretaceous — consisting of or resembling chalk
- crinolines — Plural form of crinoline.
- criterions — Plural form of criterion.
- crocodiles — Plural form of crocodile.
- crookedest — Superlative form of crooked.
- crookesite — a rare mineral, selenide of copper, thallium, and silver, (Cu, Tl, Ag) 2 Se, occurring in steel-gray, compact masses.