• do-noting,
• do-nothin,
• do-nothing,
• sonothing,
• xonothing,
• conothing,
• fonothing,
• ronothing,
• eonothing,
• dinothing,
• dknothing,
• dlnothing,
• dpnothing,
• d0nothing,
• d9nothing,
• dobothing,
• dnothing,
• donthing,
• donothin,
• donthingg

The adjective form of the word "donothing" is "do-nothing".

The word "donothing" is already plural and does not have a distinct plural form.

The singular form of the word "donothing" is "donothing". This word does not have a separate singular form as it is an uncountable noun.