naturism

n [U] = nudism (nude).

nattily, natty, natural, natural childbirth, natural gas, natural history, natural law, natural philosophy, natural selection, naturalgas, naturalism, naturalist, naturalistic, naturalization, naturalisation, naturalize, naturalise, naturally, naturalness, nature, nature study, nature trail, naturist, naturopath, naturopathic, naturopathically, naturopathy, naught, naughtily, naughtiness, naughty, nausea, nauseate, nauseating, nauseatingly, nauseous, nautical, nautical mile, nautilus, naval, nave, navel,