| Word | Definitions | Synonyms |
|---|---|---|
| hygienic | (adjective) tending to promote or preserve health | Synonyms: hygienical |
| hygienical | (adjective) tending to promote or preserve health | Synonyms: hygienic |
| hygrophytic | (adjective) requiring an abundance of moisture | - |
| hygroscopic | (adjective) absorbing moisture (as from the air) | - |