The noun genius is the singular form, the plural form is geniuses.
analysis itself is a singular form
The noun form 'cut' is singular; the plural form is 'cuts'.
The singular possessive form of criterion is criterion's
Yes, apple is the singular; the plural form is apples.
Addendum is the singular form; the plural form is addenda, although there is some acceptance for addendums as the plural.
The noun genius is the singular form, the plural form is geniuses.
genius
The possessive form of the singular noun toy is toy's.example: The toy's inventor was a genius.
Singular possessives of nouns always use the apostrophe S regardless of their spelling.The possessive would be genius's (e.g. a genius's IQ is very high).
The singular form of the demonstrative pronoun 'these' is this.
The singular form of "that" is "it."
it is already in its singular form.
The singular form is cuff.
"Stratum" is the singular form of stratum. The plural form is "strata".
The form hypothesis is the singular form. The plural form is hypotheses.
A singular form of dice is a die
The singular form of feet is foot.