Arch(prefix)
(Chief; principal.)
Hindi meaning:प्रधान/मुख्य
Synonyms: Foremost, Leading, Main, Pre-Eminent, Cardinal, Major, Prime, Premier
Antonyms: Auxiliary, Insignificant, Secondary, Subordinate
Example: In cricket India and Pakistan arch rivals.
Trick to remember: Ye aaj hmari team ke arch bowler hai. 
