Dictionary

fastness

noun fast·ness \ˈfas(t)-nəs\

: a place that is difficult to get to or that can be easily defended if it is attacked

Full 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>

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

Rhymes with FASTNESS

fastness

noun fast·ness \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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