| BEHAVIOURISTIC | • behaviouristic adj. Britain standard spelling of behavioristic. • BEHAVIOURISTIC adj. relating to behaviourism, also BEHAVIORISTIC. |
| CHIVALROUSNESS | • chivalrousness n. The state of being chivalrous. • CHIVALROUS n. gentlemanly, valiant. |
| CLAVICYTHERIUM | • clavicytherium n. (Music) A harpsichord in which the soundboard and strings are mounted vertically facing the player. • CLAVICYTHERIUM n. a harpsichord-like musical instrument. |
| EXTRAVEHICULAR | • extravehicular adj. Relating to, on happening in, the space outside a vehicle, especially a spacecraft in space. • extra-vehicular adj. Alternative spelling of extravehicular. • EXTRAVEHICULAR adj. taking place outside a vehicle (as a spacecraft). |
| HYPERVIRULENCE | • hypervirulence n. An increased virulence. |
| INTERBEHAVIOUR | • interbehaviour n. Rare spelling of interbehavior. • INTERBEHAVIOUR n. interaction between multiple individuals, also INTERBEHAVIOR. |
| NONBEHAVIOURAL | • nonbehavioural adj. Alternative spelling of nonbehavioral. • NONBEHAVIOURAL adj. not behavioural, also NONBEHAVIORAL. |
| OVERBURTHENING | • overburthening v. Present participle of overburthen. • OVERBURTHEN v. (archaic) to overburden, also OVERBURDEN. |
| OVERENTHUSIASM | • overenthusiasm n. Excessive enthusiasm. • OVERENTHUSIASM n. an excessive enthusiasm. |
| OVERFLOURISHED | • overflourished v. Simple past tense and past participle of overflourish. • OVERFLOURISH v. to cover with blossom, or with flourishes or ornament. |
| OVERFLOURISHES | • overflourishes v. Third-person singular simple present indicative form of overflourish. • OVERFLOURISH v. to cover with blossom, or with flourishes or ornament. |
| OVERNOURISHING | • overnourishing v. Present participle of overnourish. • OVERNOURISH v. to nourish excessively. |
| OVERSCHEDULING | • overscheduling v. Present participle of overschedule. |
| QUICKSILVERISH | • quicksilverish adj. Like quicksilver. • QUICKSILVERISH adj. somewhat like quicksilver. |
| SUPERACHIEVERS | • superachievers n. Plural of superachiever. • SUPERACHIEVER n. an extreme achiever. |
| SUPERVISORSHIP | • supervisorship n. The post or office of supervisor. • SUPERVISORSHIP n. the office of supervisor. |
| UNAPPREHENSIVE | • unapprehensive adj. Not apprehending. • UNAPPREHENSIVE adj. not apprehensive. |
| UNDERACHIEVERS | • underachievers n. Plural of underachiever. • UNDERACHIEVER n. one that fails to attain a predicted level of achievement or does not do as well as expected. |
| UNDERACHIEVING | • underachieving v. Present participle of underachieve. • UNDERACHIEVE v. to achieve less than one's potential. |