Speed is a slang term for the street drug methamphetamine.
Rash or headlong action; precipitateness:
The state or quality of being hard (in various senses)
Security is defined as being free from danger, or feeling safe.
Stability is the state of being resistant to change and not prone to wild fluctuations in emotion.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
Intensity of emotion or belief:
Something different; variety:
The definition of a stronghold is a place that has been secured tightly in case of attack, or a place where a particular belief or ideology is firmly believed and staunchly defended.
Something fixed or immovable.
One that is invariably present in and long associated with a place:
Find another word for fastness. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for fastness, like: rapidity, speed, swiftness, haste, firmness, hardness, security, soundness, stability, stableness and steadiness.