Well, if you go by the cactus/cacti, or genious/geni law then "Doofi" is actually correctly odd english. But I am sure that doofus'es is perfectly acceptable for describing brothers, or somthing of that nature.
There is no plural form for the word, countries. This word itself is a plural.
The plural of diary is diaries.
The plural form of the word gelato is gelati.
The plural form of the word 'deed' is 'deeds'.
The plural form of the word neurosis is "neuroses".
First attested as urban (scholatic) slang 1950s U.S. Possible portmanteau of 'doo-doo' and 'goofus', most often seen spelt 'doofus'.
There is no plural form for the word, countries. This word itself is a plural.
The plural form of the word "inferno" is "infernos."
Its a word you dufus.
There is no plural word for if.
The plural form is data.
In Chinese, the plural form of the word "minute" is "分钟" (fēnzhōng).
The plural of diary is diaries.
The plural form of the word gelato is gelati.
The plural form for the word 'pioneer' is pioneers.
The plural form of the word "baby" is "babies."
The plural form of the word 'deed' is 'deeds'.