Definitions of fastness
  1. noun
    a rate (usually rapid) at which something happens
    synonyms: speed, swiftness
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    haste, hastiness, hurriedness, hurry, precipitation
    overly eager speed (and possible carelessness)
    execution speed
    (computer science) the speed with which a computational device can execute instructions; measured in MIPS
    graduality, gradualness
    the quality of being gradual or of coming about by gradual stages
    abruptness, precipitance, precipitancy, precipitateness, precipitousness, suddenness
    the quality of happening with headlong haste or without warning
    type of:
    clip, pace, rate
    the relative speed of progress or change
  2. noun
    the quality of being fixed in place as by some firm attachment
    synonyms: fixedness, fixity, fixture, secureness
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    the quality of movability by virtue of being free from attachment or other restraints
    lodgement, lodging, lodgment
    the state or quality of being lodged or fixed even temporarily
    type of:
    immovability, immovableness
    not capable of being moved or rearranged
  3. noun
    a strongly fortified defensive structure
    synonyms: stronghold
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    bastion, citadel
    a stronghold into which people could go for shelter during a battle
    a stronghold that is reinforced for protection from enemy fire; with apertures for defensive fire
    a stronghold
    donjon, dungeon, keep
    the main tower within the walls of a medieval castle or fortress
    an entrenched stronghold or refuge
    the citadel in ancient Greek towns
    citadel of a Russian town
    type of:
    defence, defense, defensive structure
    a structure used to defend against attack
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