Relating to or resembling lightning, thunder, or electrical phenomena, especially in appearing sudden and violent.
From Greek akron 'peak' + keraunos 'lightning, thunder.' Originally described lightning striking from peak to ground, hence the association with violent electrical phenomena.
The ancient Greeks noticed lightning loved mountains—they literally combined 'peak' and 'thunder' to make this word, and they were right: high points do attract lightning strikes!
Complete word intelligence in one call. Free tier — 50 lookups/day.