- Marvelously Adv. Inter.
- Masculinely Adv.
- Maskless Adj. Adv.
- Masochistically Adv.
- Massedly Adv.
- Massively Adv.
- Masterfully Adv.
- Masterly Adj. Adv.
- Matchlessly Adv.
- Materialistically Adv.
- Materially Adv.
- Maternally Adv.
- Mathematically Adv.
- Matriarchally Adv.
- Matrilineally Adv.
- Matrilinearly Adv.
- Matrimonially Adv.
- Mattedly Adv.
- Maturely Adv.
- Matutinally Adv.
- Maudlinly Adv.
- Mawkishly Adv.
- Maximally Adv.
- Maximum Adj. Subst. Adv.
- Maybe Adv. Subst. Inter.
- Mayhap Adv.
- Mayhaps Adv. Inter.
- Mazedly Adv.
- Mazelike Adj. Adv.
- Mazily Adv.
- Meagerly Adv.
- Meagrely Adv.
- Meaningfully Adv.
- Meaninglessly Adv.
- Meaningly Adv.
- Meanly Adv.
- Meantime Subst. Adv.
- Meanwhile Adv. Subst. Konj.
- Measurably Adv.
- Meatily Adv.
- Mechanically Adv.
- Mechanistically Adv.
- Mechanotheraputically Adv.
- Mecum Subst. Adv.
- Meddlesomely Adv.
- Mediaevally Adv.
- Medially Adv.
- Medianly Adv.
- Mediately Adv.
- Medicably Adv.
- Medically Adv.
- Medicinally Adv.
- Medievally Adv.
- Meditatively Adv.
- Medium Adj. Subst. Adv.
- Meekly Adv.
- Meetly Adv.
- Mega Adj. Subst. Adv.
- Megalomaniacally Adv.
- Meiotically Adv.