English 'abundant' from Latin 'abundāre' (to overflow), from 'ab-' (from) + 'unda' (wave) — something abundant literally overflows like waves.
Existing or available in large quantities; plentiful; more than enough.
From Old French 'abondant' (plentiful, overflowing), from Latin 'abundantem' (accusative of 'abundāns'), the present participle of 'abundāre' (to overflow, to abound, to be plentiful), from 'ab-' (away from, over) + 'undāre' (to move in waves, to surge), from 'unda' (a wave). 'Unda' traces to PIE *wed- or *wod- (water, wet), the same root as English 'water,' 'wet,' and 'winter,' Old English 'wæter,' German 'Wasser,' Sanskrit 'udán' (water), and Greek 'hýdōr' (water). The image in 'abundant' is of a container so full that it spills over like a wave — there is not merely enough but an excess that flows outward. The Latin 'unda' also gives