单词	hard-and-fast
释义	hard-and-fast adjective ˌhärd-ᵊn-ˈfast  : not to be modified or evaded : strict a hard-and-fast rule Synonyms certain determinate final firm fixed flat frozen hard inexpugnable set settled stable See all Synonyms & Antonyms Word History First Known Use 1822, in the meaning defined above hard-and-fast adjective 1 as in certain having been established and usually not subject to change hard-and-fast rules that governed the corporate environment in those days included strictures regarding office dress that were rigidly enforced Synonyms & Similar Words Relevance certain unchangeable stable unchanging final determinate fixed set hard firm specific flat definite inexpugnable steady explicit constant settled frozen uniform exact good nonnegotiable stipulated reliable solid true given dependable unwavering stated sure nonadjustable safe tried-and-true noncancelable responsible trustworthy tried trusty Antonyms & Near Antonyms negotiable changeable adjustable indefinite unspecified uncertain capricious variable unpredictable mutable open-ended volatile fluid mercurial inconstant unsteady changeful unstable temperamental fluctuating unsettled flickery See More 2 as in unchangeable not capable of changing or being changed hard-and-fast beliefs that are the rock-solid foundation of their religion Synonyms & Similar Words unchangeable unalterable invariable unchanging fixed determinate immutable inalterable inflexible steadfast established constant unvarying steady incommutable changeless stable set unaltered immovable unmovable settled Antonyms & Near Antonyms flexible variable elastic changeable uncertain adaptable mutable adjustable varying fickle alterable unstable plastic pliable inconstant unsettled fluctuating willowy supple pliant See More
随便看	cy pres cy's day cya cyamelide cyami cyamopses cyamopsises cyamopsisses cyamuses cyamusses cyan cyan blue cyanamide cyanamide process cyanamides cyanamids Cyanastraceae cyanate cyanates Cyanea cyanean cyaneous cyaner cyanest cyanhydrin

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