"Praying mantises" or "praying mantes" are both accepted, as is "praying mantids".
The plural of praying mantis (not "preying mantis") is praying mantids, mantes or mantises. All are accepted forms.
The plural form of mantis is mantises.
Manti
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.
The plural of praying mantis is praying mantises or praying mantes. The plural of grasshopper is grasshoppers.
mantises or mantids
Mantis
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 word for delay is delays.
The plural form for the demonstrative pronoun this is these.
mantis
Kamakiri
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
No it's a singular word. A plural word would be "have".