Alphabet Filter:

Results

Definition of fastness:

  1. A fast place; a stronghold; a fortress or fort; a secure retreat; a castle; as, the enemy retired to their fastnesses in the mountains.
  2. Conciseness of style.
  3. The state of being fast and firm; firmness; fixedness; security; faithfulness.
  4. The state of being fast or swift.

Synonyms:

mending, continue, fort, regular, stableness, fix, sureness, habitue, speeding, stationariness, stability, pep pill, amphetamine, security, fixity, hurrying, speed, focal ratio, fixing, unalterability, fortress, swiftness, f number, fixture, firmness, fixedness, mend, soundness, fortification, secureness, change, reparation, citadel, repair, upper, hardness, immobility, velocity, stronghold, sturdiness, immutability, strength, immutableness, castle, better, stop number, steadiness.

Usage examples: