Fastness

//ˈfɑːs(t)nəs//

Synonyms for "fastness" (74 found)

Ranked by relevance and common usage.

Closest matches (15)

acropolis air speed aplomb balance bastion beachhead blockhouse bridgehead bunker castle celerity citadel commitment constancy cool

Strong matches (22)

debauchery dedication defense devotion dispatch dissipation equilibrium expedition fasthold flight flit flurry fort fortress gallantry garrison haste hold homeostasis

Noun(3 words)

fixedness fixity fixture

Related words (37)

Related word relations

OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.

6 relation types

More general

7 entries

defence defense defensive structure immovability immovableness pace rate

Synonyms

2 entries

speed stronghold

derived

4 entries

acid-fastness colorfastness colour fastness colourfastness

derived from

1 entries

fasten

is a

1 entries

immovability

related to

8 entries

dye fading firmness fortress rapidity security stronghold swiftness

Translations

18 translations across 11 languages.

Bulgarian

1 entries

укрепление noun (fortified or secure place — see also fortress, stronghold)

German

2 entries

Feste noun (fortified or secure place — see also fortress, stronghold)
Festung noun (fortified or secure place — see also fortress, stronghold)

Italian

1 entries

solidità noun (ability of a dye to withstand fading)

Manx

1 entries

doon noun (fortified or secure place — see also fortress, stronghold)

Old English

1 entries

fæstnes noun (fortified or secure place — see also fortress, stronghold)

Old Irish

1 entries

daingen noun (fortified or secure place — see also fortress, stronghold)

Russian

4 entries

кре́пость noun (fortified or secure place — see also fortress, stronghold)
опло́т noun (fortified or secure place — see also fortress, stronghold)
тверды́ня noun (fortified or secure place — see also fortress, stronghold)
цитаде́ль noun (fortified or secure place — see also fortress, stronghold)

Sanskrit

1 entries

कलत्र noun (fortified or secure place — see also fortress, stronghold)

Scottish Gaelic

1 entries

daingneach noun (fortified or secure place — see also fortress, stronghold)

Turkish

1 entries

hızlılık noun (quality or state of being fast (in various senses))

Uyghur

4 entries

ئىتتىكلىك noun (quality or state of being fast (in various senses))
ئىلداملىق noun (quality or state of being fast (in various senses))
تېزلىك noun (quality or state of being fast (in various senses))
چاپسانلىق noun (quality or state of being fast (in various senses))

Sample sentences

15 total sentences available.

Tatoeba + Wiktionary

[T]he thing, as it is, having firſt taken vp her ſtand in the memory, and there by the way of knowledge and witting, imprinted it-ſelfe, it were hard it ſhould not repreſent it ſelfe to the imagination, diſplacing and ſupplanting falſehood, which therein can have no ſuch footing, or ſetled faſtneſſe: […]

Source: wiktionary

[T]his is the ſure, infallible Teſt of Love, that the Meaſure of its Strength is to be taken by the Faſtneſs of its Hold.

Source: wiktionary

[Frog:] Why are all of us fleein'? What dire peril threatens our sylvan fastness? [Bug:] Just run! Your fastness shouldn't be too slow.

Source: wiktionary

But now his cruelty ſo ſore ſhe drad, / That to thoſe fennes for faſtneſſe ſhe did fly, / And there her ſelfe did hyde from his hard tyranny.

Source: wiktionary

Showing 4 of 15 available sentences.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.