12-letter words containing f, u, n, d, s
- spinal fluid — cerebrospinal fluid
- stand up for — (of a person) to be in an upright position on the feet.
- stefan dušan — 1308–55, king of Serbia (1331–55), who conquered Albania (1343) and large parts of the Byzantine empire, into which he introduced legal and administrative reforms
- student file — a file containing information about each student in a school, college, etc, such as demographic information and information about grades, etc
- subinfeudate — to grant (lands) by subinfeudation
- sulfadiazine — a sulfanilamide derivative, C 1 0 H 1 0 N 4 O 2 S, used chiefly in the treatment of urinary tract infections, meningitis, and malaria.
- sulfarsenide — any compound containing an arsenide and a sulfide.
- surfboarding — a long, narrow board on which a person stands or lies prone in surfboarding.
- thousandfold — having a thousand elements or parts.
- thunderflash — a pyrotechnic device which is noisy, but not dangerous, and which is used in military exercises
- un-furbished — to restore to freshness of appearance or good condition (often followed by up): to furbish a run-down neighborhood; to furbish up one's command of a foreign language.
- unclassified — not assigned to a class or category; not arranged according to characteristics: Reported instances fall into two main types, with a few unclassified anomalies.
- unconfusedly — in an unconfused manner
- undefensible — capable of being defended against assault or injury: The troops were bivouacked in a defensible position.
- undersheriff — a sheriff's deputy, especially one on whom the sheriff's duties devolve when the office is vacant.
- underspecify — to mention or name specifically or definitely; state in detail: He did not specify the amount needed.
- understaffed — having an insufficient number of personnel: The hospital is understaffed.
- understuffed — the material of which anything is made: a hard, crystalline stuff.
- undersurface — underside; bottom surface.
- unfadingness — the quality or state of being unfading
- unfastidious — not fastidious; not fussy; not appropriately concerned with detail or cleanliness
- unfittedness — the state of being unfitted
- unforecasted — to predict (a future condition or occurrence); calculate in advance: to forecast a heavy snowfall; to forecast lower interest rates.
- unfossilized — not fossilized
- unfranchised — a privilege of a public nature conferred on an individual, group, or company by a government: a franchise to operate a bus system.
- unobfuscated — to confuse, bewilder, or stupefy.
- unsanctified — not sanctified
- unsaponified — to convert (a fat) into soap by treating with an alkali.
- unscottified — not Scottish; taken out of a Scottish context
- unsimplified — to make less complex or complicated; make plainer or easier: to simplify a problem.
- unsolidified — to unite firmly or consolidate.
- unstratified — not stratified; not arranged in strata or layers: unstratified rocks.
- unwished-for — undesired; unwelcome: an unwished-for occurrence.
- zinc sulfide — a white to yellow, crystalline powder, ZnS, soluble in acids, insoluble in water, occurring naturally as wurtzite and sphalerite: used as a pigment and as a phosphor on x-ray and television screens.