[ami.cus us.que ad aras] [L] foreign term : a friend as far as to the altars, i.e., except in what is contrary to one's religion; also: a friend to the last extremity
AMICUS USQUE AD ARAS
Meaning of AMICUS USQUE AD ARAS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012