from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. superlative form of happening: most happening.
Sorry, no etymologies found.
Full of the latest, greatest, hippest and happeningest new beat music, it's time to put your polo neck on, don a beret and light a huge pipeful of SHAG.
This is one of the hippest, happeningest music groups in the state.