Ally adjectives are listed in this post. Each word below can often be found in front of the noun ally in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing ALLY.
able, active, american, ancient, austrian, best, better, biggest, british, chief, close, closest, constant, critical, crucial, dangerous, dependable, dependent, desirable, devoted
effective, efficient, english, erstwhile, european, faithful, faithless, firm, first, foreign, former, formidable, french, friendly, future, genei, gener, generous, genet, german
good, great, greatest, helpful, illustrious, important, independent, indian, indispensable, intimate, invaluable, italian, key, last, late, longtime, loyal, main, major, mighty
military, more, nato, natui, natural, near, nearest, necessary, new, noble, nominal, old, oldest, only, other, own, political, possible, potent, potential
powerful, principal, ready, real, regional, reliable, roman, russian, secret, single, soviet, staunch, staunchest, steadfast, stout, strategic, strong, stronger, strongest, sure
time, traditional, treacherous, true, trustworthy, unexpected, unlikely, unreliable, useful, usu, valuable, wartime, welcome, willing, worthy
Hope this word list had the adjective used with ally you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.