no, the plural form of illness,,,,,illnesses
The plural of illness is illnesses.
Diagnoses is the plural of diagnosis
The word 'illness' is a noun, a singular, common, abstract noun; a word for a disease or period of sickness affecting the body or mind.The plural form for the noun illness is illnesses.
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "is" is "are."
The plural form of "was" is "were."
The plural form of "I" is "we."
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.