oldbie

As nouns the difference between oldbie and oldie

is that oldbie is (internet|rare) an old-timer, a person with experience while oldie is something or someone old.

Newbie is an antonym of oldbie.

As nouns the difference between newbie and oldbie

is that newbie is (slang) a newcomer, someone new to something while oldbie is (internet|rare) an old-timer, a person with experience.

Oldfag is a synonym of oldbie.

As nouns the difference between oldfag and oldbie

is that oldfag is (internet|slang|offensive) an oldbie; a veteran member of the community (or any other online community) while oldbie is (internet|rare) an old-timer, a person with experience.

As nouns the difference between experience and oldbie

is that experience is experiment, trial, test while oldbie is (internet|rare) an old-timer, a person with experience.