verb
BAD : Most nights when I come home, I'm too tired to bathe.
GOOD : Most nights when I come home, I'm too tired to have a bath.
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In British English, bathe, have/go for a bathe and go bathing mean 'swim, play or just relax in the water' (NOT 'get clean in a bath'): 'It was the first time I'd bathed in the Red Sea.' Nowadays most people use swim, have/go for a swim or go swimming for this meaning.
In American English, bathe means 'get clean in a bath'.