HARD-AND-FAST


Meaning of HARD-AND-FAST in English

ˌhard-and-ˈfast BrE AmE adjective [only before noun]

clear, definite, and always able to be used:

It is impossible to give hard-and-fast rules, but here are some points to consider.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.