How Do You Say Teacher in Arabic!

Male teacher: Moallim معلم, or Modarres مدرس

Female teacher: Moallima معلمة, or Modarresa مدرسة

Female plural of teacher: Modarresat مدرسات, or Moallimat معلمات

Male plural of teacher: Moallimeen معلمين, Modarreseen مدرسين

ِAlso you can use Ostaz = أستاذ for Male teacher, and Ostaza = أستاذة for Female teacher.

Note:  You can use these words in formal way: Ostaz/ Ostaza for someone you don't know him/her.

When you say it for someone you don't know:

In this case the meaning changes that means: Ostaz = أستاذ it means Mr., Ostaza = أستاذة it means: lady, or Mrs

Also you can use Ostaz/Ostaza for someone who works as attorney "lawyer".