1. Not yet begun.

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

• ynbegun,
• hnbegun,
• jnbegun,
• inbegun,
• 8nbegun,
• 7nbegun,
• ubbegun,
• umbegun,
• ujbegun,
• uhbegun,
• unvegun,
• unnegun,
• unhegun,
• ungegun,
• unbwgun,
• unbsgun,
• unbdgun,
• unbrgun,
• unb4gun,
• unb3gun

• unbind,
• Unburn,
• unborn,
• unbound,
• unbend,
• Unbenign,
• unburned,
• unbounded,
• unbent,
• unblurred,
• unbanned,
• Unbought,
• unbodied,
• unbending.

The adjective form of the word "unbegun" is "unbegun".

The plural form of the word "unbegun" is "unbegun". The word itself is an adjective and does not typically have a plural form.

The singular form of the word "Unbegun" is "Unbegun". This is because "Unbegun" is already in singular form; it does not change whether referring to one thing or multiple things.