Meaning : The quality of being fixed in place as by some firm attachment.
Synonyms : fixedness, fixity, fixture, secureness
The quality of movability by virtue of being free from attachment or other restraints.
loosenessMeaning : A strongly fortified defensive structure.
Synonyms : stronghold
Fastness ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Fastness ka matlab kya hota hai?