sub-năto

āre, v. n.
I. to swim beneath (post-Aug. and very rare): pars subnatat unda Membrorum, pars exstat aquis, Sil. 14, 482: currus bijuges alii subnatant, App. M. 4, p. 157, 6.
Lewis & Short
A Latin Dictionary, 1879
An open-access project