EN

Synonyms for fastness

  • noun

Most common

speed quickness swiftness celerity fixture fixity

Synonyms by meaning

Noun

1. Swiftness — the quality or state of being fast (in various senses). The quality or state of moving quickly; quickness…

swiftness, speed, quickness, celerity, rapidity, haste, expedition

2. Fixity

fixity, fixture, fixedness, secureness

3. Stronghold

stronghold, fortress, citadel, castle, fort

Other

security

Definitions

  1. n. 1

    The quality or state of being fast (in various senses). The quality or state of moving quickly; quickness, rapidity, swiftness.

  2. n. 2

    The quality or state of being fast (in various senses). The quality or state of being strongly attached; firmness, secureness, tenacity.

  3. n. 3

    The quality or state of being fast (in various senses). The quality or state of being strongly attached; firmness, secureness, tenacity. The ability of a dye to withstand fading.

Forms

Plural
fastnesses → swiftnesses, speeds, quicknesses, celerities…

Choose the right word

Fastness or Stronghold?

Any defensible place, whether made so by nature or by art, is a fastness or stronghold.

J. C. Fernald, English Synonyms and Antonyms (1914)

Example sentences

  • speed Let's see if we can speed up the process a little.
  • swiftness The kite soared upwards with the swiftness of a bird.
  • fixture Sami became a permanent fixture in Layla's house.

Popularity over time

Word1850 → 2019Trend
fastnessfalling
speedsteady
quicknessrising
swiftnessrising
celeritysteady
fixturesteady

Use in printed books, per decade from 1850 to 2019.

By length

4 letters
fort1
5 letters
speed1, haste1
6 letters
castle2, fixity
7 letters
fixture2, citadel3
8 letters
security4, fortress2, rapidity4, celerity4
9 letters
quickness2, swiftness2, fixedness
10 letters
expedition4, stronghold2, secureness

The small number after each word is its number of syllables (castle2 = 2 syllables).