12-letter words containing f, i, e, r, s
- perforations — the holes punched that allow individual stamps, coupons, etc to be easily separated
- perfusionist — a medical technician or nurse who monitors and operates equipment that oxygenates the blood, as during open-heart surgery
- persian gulf — strait in the Indian Ocean
- personifying — to attribute human nature or character to (an inanimate object or an abstraction), as in speech or writing.
- petaliferous — bearing or having petals.
- pfund series — a series of lines in the infrared spectrum of hydrogen.
- plumbiferous — yielding or containing lead.
- prespecified — to mention or name specifically or definitely; state in detail: He did not specify the amount needed.
- press office — a section of a government department or other organization responsible for dealing with the press
- pridefulness — a high or inordinate opinion of one's own dignity, importance, merit, or superiority, whether as cherished in the mind or as displayed in bearing, conduct, etc.
- prison fever — typhus.
- pro-feminism — the doctrine advocating social, political, and all other rights of women equal to those of men.
- professional — following an occupation as a means of livelihood or for gain: a professional builder.
- professorial — a teacher of the highest academic rank in a college or university, who has been awarded the title Professor in a particular branch of learning; a full professor: a professor of Spanish literature.
- profitlessly — in such a way as to not yield profit, as in financial gains or general benefits or advantages
- prolificness — producing offspring, young, fruit, etc., abundantly; highly fruitful: a prolific pear tree.
- pyritiferous — having or producing pyrites
- rabbitfishes — Plural form of rabbitfish.
- rat-infested — (of a place or vessel) that has many rats
- reclassified — to classify anew.
- red bandfish — a fish, Cepola haastii, found on the inner continental shelf around New Zealand: family Cepolidae
- red goatfish — a goatfish, Mullus auratus.
- redispose of — to dispose of again
- refreshingly — having the power to restore freshness, vitality, energy, etc.: a refreshing nap.
- refurnishing — to supply (a house, room, etc.) with necessary furniture, carpets, appliances, etc.
- reichsfuhrer — the title of the chief of the Schutzstaffel.
- renfrewshire — a historic county in SW Scotland.
- resiniferous — yielding resin.
- risk-benefit — involving studies, testing, etc., to establish whether the benefits, as of a course of medical treatment, outweigh the risks involved: to arrive at a risk-benefit ratio.
- river forest — a city in NE Illinois.
- safe surfing — the practice of using security measures to protect one's computer while surfing the internet
- safecracking — the act of breaking into a safe
- saffron rice — a dish made from white rice and flavoured with the spice saffron
- salutiferous — salutary.
- sanguiferous — conveying blood, as a blood vessel.
- satin-flower — a Californian plant, Clarkia amoena, of the evening primrose family, having cup-shaped pink or purplish flowers blotched with red.
- savoir faire — knowledge of just what to do in any situation; tact.
- savoir-faire — knowledge of just what to do in any situation; tact.
- scalar field — a region with a number assigned at each point.
- scared stiff — terrified
- schrieffer's — John Robert, born 1931, U.S. physicist: Nobel prize 1972.
- scire facias — a writ requiring the party against whom it is brought to show cause why a judgment, letters patent, etc., should not be executed, vacated, or annulled.
- scratch file — A scratch file is a temporary computer file which you use as a work area or as a store while a program is operating.
- sea crawfish — spiny lobster
- sea crayfish — spiny lobster.
- seleniferous — containing or yielding selenium.
- self-drawing — the act of a person or thing that draws.
- self-driving — (of a machine) operating without the guidance of a human.
- self-fertile — capable of self-fertilization.
- self-insurer — one insured under self-insurance.