1. An assembly of Welsh bards met together for the purpose of receiving prizes for their musical or poetical compositions; a custom recently revived by the Gwynnedigion and Cambrian Society, which assembles annually for the adjudging of prizes for poetical recitations and performances on the harp.

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

• wisteddfod,
• sisteddfod,
• disteddfod,
• risteddfod,
• eisteddvod,
• eisteddfrod,
• eisteddford,
• eistedfod,
• eysteddfod,
• eceddfod,
• eisteddvood,
• eistedford,
• edsteddfod,
• eistedofod,
• eistedfot,
• eisteddfad,
• eisedfod,
• eisteddphod,
• eistefod,
• eistdefod

The adjective form of the word "eisteddfod" is "eisteddfodic". However, it is not a widely used adjective, and the noun form is more commonly used.