| CONSTRAINS | • constrains v. Third-person singular simple present indicative form of constrain. • CONSTRAIN v. to force, compel.
 | 
| INNERMOSTS | • innermosts n. Plural of innermost. • INNERMOST n. an innermost thing.
 | 
| INSERTIONS | • insertions n. Plural of insertion. • INSERTION n. the act of inserting.
 | 
| INTORSIONS | • intorsions n. Plural of intorsion. • INTORSION n. a twist, a twine, also INTORTION.
 | 
| INTRUSIONS | • intrusions n. Plural of intrusion. • INTRUSION n. the act of intruding.
 | 
| IRONSTONES | • ironstones n. Plural of ironstone. • IRONSTONE n. a hard, earthy ore of iron.
 | 
| NONARTISTS | • nonartists n. Plural of nonartist. • NONARTIST n. one who is not an artist.
 | 
| NONSTORIES | • nonstories n. Plural of nonstory. • NONSTORY n. an insignificant news story.
 | 
| NOTORNISES | • NOTORNIS n. (Greek) a domestic-fowl-like bird of New Zealand, aka takahe. | 
| SEROTONINS | • serotonins n. Plural of serotonin. • SEROTONIN n. a compound occurring in the brain, acting as a neurotransmitter.
 | 
| STINKHORNS | • stinkhorns n. Plural of stinkhorn. • STINKHORN n. a kind of fungus of the genus Phallus, which emits a fetid odor.
 | 
| STRONTIANS | • strontians n. Plural of strontian. • STRONTIAN n. an oxide of the metal strontium, also STRONTIA.
 | 
| TENSIONERS | • tensioners n. Plural of tensioner. • TENSIONER n. something that tensions.
 | 
| THORNINESS | • thorniness n. The property of being thorny (of having thorns or metaphorically being difficult). • THORNINESS n. the state of being thorny.
 | 
| TRANSONICS | • transonics n. The study of transonic travel. • TRANSONICS n. the range of speeds close to that sound.
 | 
| TRANSSONIC | • transsonic adj. Alternative form of transonic. • TRANSSONIC adj. relating to the range of speeds close to that sound.
 |