9-letter words containing ack
- backdated — Put an earlier date to (a document or agreement) than the actual one.
- backdates — Third-person singular simple present indicative form of backdate.
- backdowns — Plural form of backdown.
- backdraft — an explosive surge in a fire produced by the sudden mixing of air with other combustible gases.
- backdrops — Plural form of backdrop.
- backer-up — a supporter; backer; second.
- backfield — the area behind the line of scrimmage from which the backfield begin each play
- backfiles — Plural form of backfile.
- backfills — Plural form of backfill.
- backfired — Simple past tense and past participle of backfire.
- backfires — Plural form of backfire.
- backfisch — a teenage girl; a girl who has not yet reached maturity
- backflash — a flashback: Backflashes of the heroine's childhood fill in gaps in the novel's narrative.
- backflips — Plural form of backflip.
- backflows — Plural form of backflow.
- backhands — Plural form of backhand.
- backheels — Plural form of backheel.
- backhouse — an outdoor privy; outhouse
- backlands — Plural form of backland.
- backlifts — Plural form of backlift.
- backlight — light falling on a photographic or television subject from the rear
- backlists — Third-person singular simple present indicative form of backlist.
- backorder — Commerce. an order or part of an order waiting to be filled.
- backpacks — Plural form of backpack.
- backpedal — to press backward on the pedals of a bicycle, as to brake
- backpiece — a tattoo on the back
- backplane — A board to which the main circuit boards of a computer may be connected and that provides connections between them.
- backplate — a plate of armour which guards the back
- backprint — The mark or impression left by a person's back having been pressed against a surface.
- backrests — Plural form of backrest.
- backroads — Plural form of backroad.
- backronym — an existing word turned into an acronym by creating an apt phrase whose initial letters match the word, as to help remember it or offer a theory of its origin. For example, rap has been said to be a backronym of “rhythm and poetry.”.
- backrooms — Plural form of backroom.
- backround — Misspelling of background.
- backseats — Plural form of backseat.
- backshift — The changing of a present tense in direct speech to a past tense in reported speech (or a past tense to pluperfect).
- backshish — Alternative spelling of baksheesh.
- backshore — the area of a beach above the usual high tide mark
- backsides — Plural form of backside.
- backsight — the sight of a rifle nearer the stock
- backslash — a slash which slopes to the left \
- backslide — to lapse into bad habits or vices from a state of virtue, religious faith, etc
- backsolve — To determine the inputs that would lead to a given output in a mathematical system.
- backspace — to move a (typewriter carriage) backwards
- backspeir — to cross-examine, interrogate
- backstabs — Third-person singular simple present indicative form of backstab.
- backstage — In a theatre, backstage refers to the areas behind the stage.
- backstall — the loss of power and tendency to drop of a kite in low winds
- backstamp — a mark stamped on the back of an envelope by a post office to indicate the date and place of its arrival
- backstays — Plural form of backstay.