Steadfast(adjective)
Not changing in your attitudes or aims.
Hindi meaning:पक्का
Synonyms: Firm, Unwavering, Staunch, Persistent
Antonyms: Fickle, Irresolute, Unreliable, Disloyal
Example: But you're loyal and steadfast and devoted.
Trick to remember: Fast kaam krungi steadfast baat hai. 
