| adjective | characterized by lightness and insubstantiality; as impalpable or intangible as air; - Thomas Carlyle “figures light and aeriform come unlooked for and melt away” |
| adjective | of or containing or dissolved in ether “ethereal solution” |
| adjective | of heaven or the spirit “celestial peace” |
| adjective | characterized by unusual lightness and delicacy “this smallest and most ethereal of birds” |
| airiness | noun | the property of something weightless and insubstantial |
| ether | noun | any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom |
| gossamer | noun | filaments from a web that was spun by a spider |