1) Clean 2) Conducive to good health 3) French word used in English 4) Healthful 5) Hygienical 6) Of or pertaining to hygiene 7) Sanitary Found on https://www.crosswordclues.com/clue/hygienic
hygienic 1. Relating to the scientific study or principles of cleanliness and health.2. A reference to health or its preservation.3. Clean or free from disease-causing microorganisms.4. Belonging or relating to hygiene; sanitary. Found on http://www.wordinfo.info/words/index/info/view_unit/1012/
hygienicaladjective tending to promote or preserve health; `hygienic habits like using disposable tissues`; `hygienic surroundings with plenty of fresh air` Found on https://www.encyclo.co.uk/local/20974