What is "matowa"

Muṭawwaʿ (مطوّع) (plural muṭawwaʿūn (مطوّعون)) is a word that is used to describe a religious Muslim man. This word is used in Gulf countries in the Middle East ( Kingdom of Saudi Arabia, Kuwait, Kingdom of Bahrain, Qatar, United Arab Emirates, & Sultanate of Oman), but it may also be used in Yemen, since Yemen and Gulf countries have a lot of cultural similarities. The term was also in use in Tunisia to refer to a holder of a diploma from a religious institution (see below).
The term has also been coopted by self-styled "religious police" (see Muṭawwaʿūn).