What is another word for "humectation"?

Roget's Thesaurus (1911) lists these synonyms for "humectation": add, affuse, affusion, aqua, aquatic, aqueous, are, balneal, balneation, bath, bathe, bedew, dabble, damp, dank, deluge, dew, dewy, diluent, dilute, diluted, dilution, dip, douche, douse, drench, dripping, drown, dry, duck, exude, flood, gargle, have, high, humect, humectate, humid, humidity, hydrous.