HYGIENIC
hygienic, hygienical
(adjective) tending to promote or preserve health; “hygienic habits like using disposable tissues”; “hygienic surroundings with plenty of fresh air”
Source: WordNet® 3.1
Etymology
Adjective
hygienic (comparative more hygienic, superlative most hygienic)
Pertaining to hygiene; clean, sanitary.
(computing, slang, of a macro) Whose expansion is guaranteed not to cause the accidental capture of identifiers.
Antonyms
• unhygienic
Source: Wiktionary
Hy`gi*en"ic, a. Etym: [Cf. F. hygiénique.]
Definition: Of or pertaining to health or hygiene; sanitary.
Source: Webster’s Unabridged Dictionary 1913 Edition