| AUTHORITATIVE | • authoritative adj. Arising or originating from a figure of authority. • authoritative adj. Highly accurate or definitive; treated or worthy of treatment as a scholarly authority. • authoritative adj. Having a commanding style. |
| AUTHORITATIVELY | • authoritatively adv. In an authoritative manner, being worthy of trust. • AUTHORITATIVE adv. having or proceeding from authority. |
| BEHAVIOURAL | • behavioural adj. (British spelling) Of or pertaining to behaviour. • BEHAVIOURAL adj. relating to behaviour, also BEHAVIORAL. |
| BEHAVIOURALLY | • behaviourally adv. With respect to behaviour. • BEHAVIOURAL adv. relating to behaviour, also BEHAVIORAL. |
| 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). |
| HALLUCINATIVE | • hallucinative adj. Relating to hallucination; hallucinatory. • HALLUCINATIVE adj. tending to produce hallucination, also HALLUCINATORY. |
| HANTAVIRUS | • hantavirus n. (Virology) Any virus of the genus Hantavirus, transmitted by aerosolized rodent excreta or rodent bites… • HANTAVIRUS n. an often fatal virus with flu-like symptoms. |
| HANTAVIRUSES | • hantaviruses n. Plural of hantavirus. • HANTAVIRUS n. an often fatal virus with flu-like symptoms. |
| NONBEHAVIOURAL | • nonbehavioural adj. Alternative spelling of nonbehavioral. • NONBEHAVIOURAL adj. not behavioural, also NONBEHAVIORAL. |
| ULTRAHEAVIER | • ULTRAHEAVY adj. very very heavy. |
| ULTRAHEAVIEST | • ULTRAHEAVY adj. very very heavy. |
| UNACHIEVABLE | • unachievable adj. That cannot be achieved (or only with great difficulty). • UNACHIEVABLE adj. that cannot be achieved. |
| UNAUTHORITATIVE | • unauthoritative adj. Not authoritative. • UNAUTHORITATIVE adj. not authoritative. |
| UNVANQUISHABLE | • unvanquishable adj. That cannot be vanquished; undefeatable, inconquerable. • UNVANQUISHABLE adj. not vanquishable. |
| VANQUISHABLE | • vanquishable adj. That can be vanquished; defeatable, conquerable. • VANQUISHABLE adj. able to be vanquished. |