Synonyms of fastness

fastness

noun

1

as in speed

a high rate of movement or performance

the amazing fastness with which the boy took his shower had us wondering if he'd used any water

Synonyms & Similar Words

• speed
• velocity
• rate
• hurry
• rapidity
• quickness
• swiftness
• celerity
• speediness
• pace
• rapidness
• fleetness
• haste
• acceleration
• gait
• tempo
• precipitation
• expedition
• promptness
• clip
• alacrity
• promptitude
• expeditiousness
• rush
• hustle
• hastiness
• drive
• dispatch
• precipitousness
• warp speed

Antonyms & Near Antonyms

• slowness
• sluggishness
• lethargy
• reluctance
• torpidity
• languor
• torpor
• deliberation
• languidness
• leisureliness
• deliberateness
• lateness
• procrastination
• dilatoriness
• pokiness

2

as in stronghold

a structure or place from which one can resist attack

the guerillas retreated to their network of hidden fastnesses deep within the mountains

Synonyms & Similar Words

• stronghold
• fortress
• bastion
• citadel
• fortification
• castle
• fort
• rampart
• parapet
• redoubt
• bunker
• hold
• bulwark
• battlement
• earthwork
• breastwork
• embattlement
• blockhouse
• dugout
• alcazar
• casbah
• garrison house
• kasbah

3

as in loyalty

adherence to something to which one is bound by a pledge or duty

his uncompromising fastness to the cause of freedom was beyond question

Synonyms & Similar Words

• loyalty
• allegiance
• dedication
• commitment
• devotion
• fidelity
• steadfastness
• faithfulness
• adhesion
• constancy
• fealty
• attachment
• piety
• faith
• devotedness
• troth
• affection
• reliability
• dependability
• resolution
• determination
• fondness
• firmness
• trustworthiness
• trustability
• trustiness

Antonyms & Near Antonyms

• treachery
• inconstancy
• disloyalty
• perfidy
• falsity
• faithlessness
• infidelity
• unfaithfulness
• falseness
• separation
• alienation
• perfidiousness
• disaffection
• estrangement