| ̷ ̷ ̷ ̷| ̷ ̷ adjective
: not subject to deviation, revision, or modification : rigidly binding : fixed , categorical , absolute
hard-and-fast rules
hard-and-fast distinctions
a hard-and-fast line
| ̷ ̷ ̷ ̷| ̷ ̷ adjective
: not subject to deviation, revision, or modification : rigidly binding : fixed , categorical , absolute
hard-and-fast rules
hard-and-fast distinctions
a hard-and-fast line
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012