loyal in WordNet English dictionary

1. unwavering in devotion to friend or vow or cause
   "a firm ally"; "loyal supporters"; "the true-hearted soldier...of Tippecanoe"- Campaign song for William Henry Harrison; "fast friends"
   firm  loyal  truehearted  fast 
   
2. steadfast in allegiance or duty
   "loyal subjects"; "loyal friends stood by him"
   loyal 
   
3. inspired by love for your country
   patriotic  loyal