By or across water, especially of travel.(adjective)
To water too much.(verb)
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Use "overwater" in a sentence
"Since plant roots need air as much as water, when you overwater, the air spaces are filled for too long and your plants can drown."
"Although overwater bungalows have become increasingly popular in recent years, the Grand Water Villa at One & Only's Reethi Rah Resort in the Maldives remains the apotheosis of the form."
"Practiced yoga on an overwater wooden platform on the South China Sea."