What is a sound plural? Here are some definitions.
Noun
(grammar) In the Semitic languages, a regular plural formed by adding a suffix, without changes to the stem. An example in Arabic is مُسْلِمُونَ (muslimūna, “Muslims”), the plural form of مُسْلِمٌ (muslimun, “a Muslim”), formed by adding the suffix ـُونَ (-ūna), and مُسْلِمَاتٌ (muslimātun, “Muslim women”), formed by adding the suffix ـَاتٌ (-ātun). This contrasts with broken plurals, which involve changes to the stem (the addition or removal of letters).
