Fastness (Noun)
Meaning 1
The quality of being fixed in place as by some firm attachment.
Classification
Nouns denoting attributes of people and objects.
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Meaning 2
A strongly fortified defensive structure.
Classification
Nouns denoting man-made objects.
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Meaning 3
A rate (usually rapid) at which something happens; "the project advanced with gratifying speed".
Classification
Nouns denoting attributes of people and objects.