رَاضٍ — رَاضِيَانِ — رَاضِيَةٌ
Translation: A satisfied person — two satisfied men — a satisfied woman.
The active participle follows fāʿil. The weak final root consonant undergoes regular transformations. In the indefinite masculine nominative singular, the resulting final yāʾ is omitted under the rule of ism manqūṣ.
FormFinal yāʾ
رَاضٍOmitted; tanwīn retained
رَاضِيَانِAppears in the dual
رَاضِيَةٌAppears in the feminine
The missing written yāʾ in one case does not change the underlying root class.