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fastness
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fast·ness

noun \ˈfas(t)-nəs\

Definition of FASTNESS

1
: the quality or state of being fast: as
a : the quality or state of being fixed
b : the quality or state of being swift
c : colorfast quality
d : resistance (as of an organism) to the action of a usually toxic substance
2
a : a fortified or secure place
b : a remote and secluded place <vacationed in their mountain fastness>
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Examples of FASTNESS

  1. <the amazing fastness with which the boy took his shower had us wondering if he'd used any water>
  2. <the guerillas retreated to their network of hidden fastnesses deep within the mountains>

First Known Use of FASTNESS

before 12th century

Related to FASTNESS

Synonyms
celerity, speed, fleetness, haste, hurry, quickness, rapidity, rapidness, speediness, swiftness, velocity
Antonyms
slowness, sluggishness

Rhymes with FASTNESS

crassness

fast·ness

noun \ˈfas(t)-nəs\   (Medical Dictionary)

Medical Definition of FASTNESS

: resistance (as of an organism) to the action of a usually toxic substance <streptomycin fastness developed by a strain of tubercule bacillus>

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