improper:
غير صحيح او غير لائق
ex: he was acting in an improper way with his wife

commentator:
المتحدث او المعلق فى الراديو او التلفاز
ex : the commentator said it 'll rain tomorrow

penetrate:
 تسلل او تغلغل
the bullet penetrated his heart causing his death

cluster :
كتلة او مجموعة متلاصقة مع بعض او حول بعض
there was a cluster of fans around him

recline :
يتكأ او يتضجع
she lay reclined on the sofa