The plural form of reader is readers.
Reader is a singular noun; readers in the plural form.
Readers' is the possessive plural of reader.
Second person -- in English it would require some context to determine whether this was singular or plural.
The cast of Poems and Pints - 1972 includes: Ryan Davies as Himself - Reader Meredith Edwards as Himself - Reader Clive Graham as Himself - Reader Ray Handy as Himself - Reader Glyn Houston as Himself - Reader Nerys Hughes as Herself - Reader Brian Jacques as Himself - Reader Brinley Jenkins as Himself - Reader John Laurie as Himself - Reader David Lyn as Himself - Reader Joe Lynch as Himself - Reader Ruth Madoc as Herself - Reader Philip Madoc as Himself - Reader Rose McBain as Herself - Reader Phil McCall as Himself - Reader Elizabeth Morgan as Herself - Reader Gaynor Morgan Rees as Herself - Reader Artro Morris as Himself - Reader Sion Probert as Himself - Reader Olwen Rees as Herself - Reader Talfryn Thomas as Himself - Reader Anne Valery as Herself - Reader
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Isthmi is plural. There are actually two plural forms. I will list them from singular to plural. Isthmus - Singular Isthmi - Plural Isthmuses - Plural
The plural of rose is roses. The plural possessive is roses'.
When a writer expects a reader to fill in the gaps, he or she is expecting the reader to compress.
The plural of 'bunch' is bunches.The plural of 'ant' is ants.The plural of 'batch' is batches.The plural of 'day' is days.The plural of 'chimney' is chimneys.The plural of 'tomato' is tomatoes.The plural of 'umbrella' is umbrellas.The plural of 'donkey' is donkeys.The plural of 'sky' is skies.The plural of 'foot' is feet.The plural of 'show' is shows.
The plural form of can is cans.
applied is does not have a plural but is apply it does have a plural.
The plural is a regular plural, attics.