natant /nāˈtənt/ (formal)

1. Floating
2. Swimming

natation /nat- or nāt-āˈshən/ noun

Swimming

nātatoˈrial or nāˈtatory adjective

1. Relating to swimming
2. Having the habit of swimming
3. Adapted or used for swimming

nātatoˈrium (pl nātatoˈriums or nātatoˈria) noun (US)

A swimming-pool

• unswears
• unsweet
• unsweetened
• unswept
• unswerving
• unswervingly
• unswore
• unsworn
• unsyllabled
• unsymmetrical
• unsymmetrically
• unsymmetries
• unsymmetrised
• unsymmetrized
• unsymmetry
• unsympathetic
• unsympathetically
• unsympathies
• unsympathising
• unsympathizing
• unsympathy
• unsystematic
• unsystematical
• unsystematically
• unsystematised