beings
Loof is not a word. There is a word aloof, which being an adjective has no plural form.
Beings, as in human beings.
Being a preposition, beside has no plural form. The word besides, meaning "also," is not a plural form, but rather an adverbial genitive.
The word means is plural. This word can be used while being a plural word. For example, the doctor would write a prescription if it means the patient will get better.
The noun 'integrity' is an uncountable noun, a word for the quality of being honest and having strong moral principles; a word for the state of being whole, undamaged, and undivided; a word for a concept.
The word crises is a plural word; it is the plural form of the word crisis.
The word "if" is a usually a conjunction, which has no plural. However, it can be used as a noun to mean a possibility, with the plural form being ifs (e.g. no ifs, ands, or buts).
A plural possessive noun is a noun that has an apostrophe after the word. This is mainly uses when the word ens in the letter S or when theres two or more things being stated.
There is no plural word for if.
The plural form for the demonstrative pronoun this is these.
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
The plural word of delay is delays.