Definition of hard and fastness in English:

hard and fastness

noun

  • The quality or condition of being rigidly laid down or prescribed; inflexibility; fixedness.

Origin

Late 19th century. From hard and fast + -ness.

Pronunciation

hard and fastness

/ˌhɑːd (ə)n(d) ˈfɑːs(t)nəs//ˌhɑːd (ə)n(d) ˈfas(t)nəs/