The singular form of a word is the form which applies only to one object, place, concept, animal, or person. For nouns, the singular form is usually the form which does not end in S. On verbs, the singular form usually ends in an S. Of course, for many words, another word is used instead, like using they as the plural form of he or she. The word they does not end in S.
analysis itself is a singular form
The noun genius is the singular form, the plural form is geniuses.
The noun form 'cut' is singular; the plural form is 'cuts'.
Yes, apple is the singular; the plural form is apples.
The singular possessive form of criterion is criterion's
The singular form of the demonstrative pronoun 'these' is this.
The singular form of "cuffs" is cuff.
The singular form of feet is foot.
The singular form of "dice" is "die."
The singular form of "oases" is "oasis."
The singular form of "wash" is "washing."
The singular form of "curricula" is "curriculum."
The singular form of "hypothysis" is "hypothesis."
The singular form is ombudsman.
it is already in its singular form.
The singular form is money.
The singular form is hilum.