12-letter words that end in er
- autoanalyzer — any of various automatic devices that test and analyze chemicals, blood, etc.
- award-winner — person or thing that wins an award
- axe-murderer — someone who commits murderer with an axe
- baby brother — a younger brother
- baby carrier — a kind of sling or rucksack used to carry small babies either on one's chest or one's back
- baby-bouncer — a seat on springs suspended from a door frame, etc, in which a baby may be placed for exercise
- back scatter — the deflection of nuclear particles or of radiation in a scattering process through an angle greater than 90°.
- back-slapper — the practice of making a loud and effusive display of friendliness, cordiality, etc., as by slapping persons on the back.
- backgrounder — A backgrounder is a short article in a newspaper or magazine that provides background information about a particular subject.
- bacon-slicer — a machine for cutting bacon into slices
- bag snatcher — a thief whose main tactic is to grab women's handbags and run off with them
- bairnsfather — Bruce. 1888–1959, British cartoonist, born in India: best known for his cartoons of the war in the trenches during World War I
- ball breaker — an arduous, often unpleasant task.
- ball-breaker — an arduous, often unpleasant task.
- ball-carrier — the offensive player having the ball and attempting to gain ground.
- balladmonger — (formerly) a seller of ballads, esp on broadsheets
- ballot paper — A ballot paper is a piece of paper on which you indicate your choice or opinion in an election or ballot.
- bank manager — A bank manager is someone who is in charge of a bank, or a particular branch of a bank, and who is involved in making decisions about whether or not to lend money to businesses and individuals.
- bar sinister — the condition, implication, or stigma of being of illegitimate birth
- barcalounger — a type of reclinable armchair with an extendable footrest
- barcoo river — a river in E central Australia, in SW Queensland: joins with the Thomson River to form Cooper Creek
- barking deer — muntjac.
- barley water — Barley water is a drink made from barley. It is sometimes flavoured with orange or lemon.
- baryta water — an aqueous solution of barium hydroxide, used chiefly as a reagent.
- basal reader — an elementary-school textbook that teaches reading by combining stories with practice exercises: The Dick and Jane series was the most famous basal reader.
- basket maker — a member of an early Native American people of the southwestern US, preceding the Pueblo people, known for skill in basket-making
- basketballer — (informal) A basketball player; a person who plays basketball.
- basketweaver — a person who advocates simple, natural, and unsophisticated living
- beach-comber — a person who lives by gathering salable articles of jetsam, refuse, etc., from beaches.
- beamsplitter — Alternative spelling of beam splitter.
- bean counter — You can describe people such as accountants and business managers as bean counters if you disapprove of them because you think they are only interested in money.
- bean-shooter — peashooter.
- beautifuller — (obsolete) Comparative form of beautiful.
- beaver fever — an infectious disease caused by drinking water that has been contaminated by wildlife
- beche-de-mer — trepang
- beer drinker — a person who drinks beer
- bell heather — an ericaceous shrub, Erica cinerea
- belly dancer — A belly dancer is a woman who performs a Middle Eastern dance in which she moves her hips and abdomen about.
- belly-buster — belly flop.
- bench-warmer — a substitute who rarely gets to play in a game.
- bengal tiger — a large tiger found in S. Asia
- beta blocker — A beta blocker is a drug which is used to treat people who have high blood pressure or heart problems.
- beta emitter — a radioactive element, either natural or artificial, which changes into another element by emitting a beta particle
- beta-blocker — any of various substances that interfere with the action of the beta receptors: used primarily to reduce the heart rate or force in the prevention, management, or treatment of angina, hypertension, or arrythmias.
- betel pepper — a tropical Asiatic climbing plant (Piper betle) of the pepper family
- bible banger — Bible-thumper.
- bible-banger — Bible-thumper.
- billy wilder — Billy (Samuel Wilder) 1906–2002, U.S. film director, producer, and writer; born in Austria.
- bingo caller — the person who shouts out the numbers to bingo players
- bird fancier — a person who keeps, breeds, or sells birds