<p><strong>Adjective</strong></p><ul><li>having the form or characteristics of vapor: a vaporous cloud.</li><li>full of or abounding in vapor; foggy; misty: a vaporous twilight.</li><li>producing or giving off vapor: a vaporous bog.</li><li>dimmed or obscured with vapor: a low valley surrounded by vaporous mountains.</li><li>unsubstantial; diaphanous; airy: vaporous fabrics; vaporous breezes.</li><li>vaguely formed, fanciful, or unreliable: vaporous promises.</li></ul>