erstwhile [ urst-hwahyl, -wahyl ]
adjective
1. former; of times past: erstwhile friends.
adverb
2. Archaic. formerly; erst.
WORDS RELATED TO ERSTWHILE
once, bygone, late, old, one-time, past, preceding, previous, sometime, quondam, ex
SYNONYMS
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1. past, bygone, previous.
ANTONYMS
1. current, present.
Origin: First recorded in 1560–70; erst + while
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