Lasting, enduring, or continuing for a long time; permanent or deep-rooted, as in 'an abiding love' or 'an abiding belief.'
From Old English abīdan, meaning to remain or endure; ab- (away, off) + bīdan (to bide, wait); the sense shifted to mean 'continuing to exist.'
'Abiding' has an old-fashioned charm—it's the word in 'The Big Lebowski' where the Dude says he 'abides,' and the word perfectly captures something that just... stays, patient and permanent, like a river eroding stone.
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