- Rarefaction: The process of making something less dense
- Reticent: Silent, Reserved
- Sopor: Deep sleep
- Soporific: Causing sleep or lethargy
- Specious: Deceptively attractive; seemingly plausible but fallacious
- Stolid: Unemotional; lacking sensitivity
- Sublimate: To evaluate or convert into something of higher worth
- Sublime: Lofty or grand
- Tacit: done without using words
- Taciturn: Silent, not talkative
- Torpid: Sluggish, lacking movement
- Torpor: extreme mental and physical sluggishness
- Transitory: Temporary, lasting a brief time
- Veracious: Truthful, accurate
- Verity: Truth
- Whim: A fancy or sudden notion
- Zephyr: Gentle Breeze