steadfast

Adjective

WordNet 3.0

marked by firm determination or resolution; not shakable“firm convictions”“a firm mouth”“steadfast resolve”“a man of unbendable perseverence”“unwavering loyalty”Synonyms: firm steady stiff unbendable unfaltering unshakable unwavering
firm and dependable especially in loyalty“a steadfast ally”“a staunch defender of free speech”“unswerving devotion”“unswerving allegiance”Synonyms: staunch unswerving

Steadfast \Stead"fast\ (-f[.a]st), a. [Stead + fast, that is, fast in place.] [Written also stedfast.]

1.Firmly fixed or established; fast fixed; firm. "This steadfast globe of earth." --Spenser. [1913 Webster]

2.Not fickle or wavering; constant; firm; resolute; unswerving; steady. "Steadfast eye." --Shak. [1913 Webster]

Abide steadfast unto him [thy neighbor] in the time of his trouble.— Ecclus. xxii. 23.[1913 Webster]

Whom resist steadfast in the faith.— 1 Pet. v. 9.[1913 Webster]