The plural is cameos. Another example of just adding an -s is studio/ studios. (What confuses people is that a few words that end in -o need an -es for the plural. A good example of this is potato: plural, potatoes.)
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
the plural word is comedones
The plural word for batch is batches.
No, the plural of problem is problems.
The plural of diary is diaries.
Ox > oxen Cameo > cameos
The word CAMIO (Catalog of Art Museum Images Online) is an acronym which has no plural and the name of some businesses such as Camio Security Alarm Systems.Perhaps you were thinking of the noun cameo, a decorative carved gem or other stone; the plural for the noun is cameos.
She had a cameo part in the movie. The cameo was white and black shell on a gold necklace.
Cameo
The word crises is a plural word; it is the plural form of the word crisis.
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.
the plural word is comedones
No it's a singular word. A plural word would be "have".
Leukocytes is the plural of leukocyte