The word 'often' is an adverb. Adverbs do not have plural forms.
The word "tidings" is plural. Although it can also be used in its singular form as "tiding", it is most often used in its plural form.
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 word "tidings" is plural. Although it can also be used in its singular form as "tiding", it is most often used in its plural form.
The plural form for the demonstrative pronoun this is these.
The plural form of the word inferno is infernos.
The plural form is ranches.
Plankton is plural and its singular form is plankter. However, be aware that the word "plankton" is most often used in its plural as a collective noun.
There is no plural word for if.
There is no plural form for the word, countries. This word itself is a plural.
The plural form is data.
The plural form of the word "baby" is "babies."
The plural form for the word 'pioneer' is pioneers.
The plural form of the word "pharynx" is "pharynges."
The plural form of vow is vows.