adjective \ˈsted-ˌfast also -fəst\

: very devoted or loyal to a person, belief, or cause : not changing

Full Definition of STEADFAST

a :  firmly fixed in place :  immovable
b :  not subject to change <the steadfast doctrine of original sin — Ellen Glasgow>
:  firm in belief, determination, or adherence :  loyal <her followers have remained steadfast>
stead·fast·ly adverb
stead·fast·ness \-ˌfas(t)-nəs, -fəs(t)-\ noun

Examples of STEADFAST

  1. He was steadfast in his support of the governor's policies.
  2. <a steadfast supporter of women's rights>


Middle English stedefast, from Old English stedefæst, from stede + fæst fixed, fast
First Known Use: before 12th century


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