i Register
In some senses, overswim is marked as archaic, poetic. Watch for register when choosing this word.
verb
To swim too fast or too strenuously.
This is particularly true in the 100-meter race, where the temptation to overswim the first 50 meters can be strong. The desire to take it out fast can backfire when the swimmers goes into a vertical body position in the final 10 meters.
To flood or inundate.