adverb
Etymology: long (II)
1. : long ago
he long since gave up the attempt to climb the mountain
2. : for a long time
has long since been recognized as a great writer
adverb
Etymology: long (II)
1. : long ago
he long since gave up the attempt to climb the mountain
2. : for a long time
has long since been recognized as a great writer
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012