Dates is already plural
Single is date
painful is an adjective and can't be pluralised
The word "this" cannot be pluralised.
Elf can be pluralised as either Elves or Elfs.
Money is a mass noun because it cannot be pluralised. A count noun like "coin" can be pluralised - one coin, two coins, etc. However, you can't say "one money, two monies".
The correct spelling is intestine. It is an anatomy term and usually pluralised to intestines.
Jinn itself is a collective noun, referring to a group of Jini (or Djinni). Incorrectly, it is often used as the singular, and pluralised as Jinni or Jinnis. It refers to more than one spiritiual being
learn doesn't actually have a pluralised form as it is a verb, not a noun. But the conjugation of the verb to learn is as follows: I learn You learn He/She/It learns We learn They learn
Fresh - but its pluralised so the noun its describing is multiple??
Fbck is not an English word. Nor a word in any other language. Therefore it cannot be pluralised.
Well of course the pluralised past tense would be "tricks"
Words are not pluralised in Samoan; a description of how much or how many usually will give an indication of something that is not one, but many or more.
Words that end in -ch are pluralised by adding -es, e.g.:church - churchescouch - coucheshunch - hunches