H6638–צָבָה–tsa.vah

and this water that brings a curse will go into your bowels, and make your body swell, and your thigh fall away.' The woman shall say, 'Amen, Amen.'

לַצְבּ֥וֹת (צְבּ֥וֹת) tz.Bot “make swell”

When he has made her drink the water, then it shall happen, if she is defiled, and has committed a trespass against her husband, that the water that causes the curse will enter into her and become bitter, and her body will swell, and her thigh will fall away: and the woman will be a curse among her people.

וְצָבְתָ֣ה (צָבְתָ֣ה) tza.ve.Tah “it will swell”