Chimneys IS the plural word.
One chimney, two chimneys.
chimneys
The plural form for the noun chimney is chimneys.
chimneyes
Chimneys is the plural form of the noun chimney.
The plural form is chimneys.
The regular plural of chimney is chimneys.
The correct spelling of the plural of chimney is chimneys.
That is the correct spelling of the plural noun "chimneys" (fireplace vents).
The word "chimney" is considered an irregular plural noun because its plural form is simply "chimneys," without adding "ies." This is a common exception in English grammar.
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.