1. An ultraist.

2. A Latin prefix, signifying beyond, extreme.

3. Extreme.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• ultr,
• untra,
• ultiria,
• cultre,
• ultil,
• eatra,
• cultry,
• unltra,
• lultra,
• alstra,
• pultry,
• ulra,
• estra,
• ulterd,
• utra,
• ultral,
• ectra,
• ulture,
• ultura,
• utlra

• ALEATOR,
• Altaer,
• Walleteer,
• Woolder,
• wilder,
• be-wilder,
• ILTER,
• alaotra,
• oltre,
• Allodiary,
• elder,
• Walder,
• aladar,
• alydar,
• Elatery,
• yildiray,
• Aludra,
• Lay-elder,
• ILTRI,
• NYU/ULTRA,
• older,
• altro,
• aletter,
• Alltair,
• Welldoer,
• ALLODARII,
• altria,
• ultracef,
• ALTARE,
• eleuterio,
• ELDR,
• elottery,
• eliodoro,
• walter,
• uludere,
• alterio,
• ALDERU,
• aliadiere,
• Elator,
• ultraa,
• aleiter,
• Eyeleteer,
• Altaira,
• aldura,
• aldro,
• ultra-,
• Eleodoro,
• Aldara,
• aleatory,
• alder,
• Eldor,
• alatri,
• eletr,
• altair,
• aladura,
• altri,
• wolder,
• eldar,
• yielder,
• Wielder,
• alatorre,
• alter-ego,
• altieri,
• ildar,
• Aldora,
• altra,
• aldar,
• bye-altar,
• alydaar,
• waltari,
• OLTRA,
• ultor,
• aldouri,
• wild rye,
• altar,
• elatior,
• wieldier,
• ultra-low,
• elater,
• Allotter,
• Altayr,
• Elettra,
• aldair,
• ultra-man,
• alter,
• altera,
• alterra,
• altar-boy,
• ALITER,
• Elytra,
• Eldoria,
• Allottery,
• Elder-gun,
• Eldora,
• Olitory,
• ultra-hip,
• eldir,
• elettaria,
• welder,
• welter,
• Eldoree.

The adjective form of the word "ultra" is "ultral".

The plural of the "ultra" can be the "ultras".

The singular of the "ultra" can be the "ultra".