- Machiavellianly Adv
- Machinelike Adj Adv
- Macroscopically Adv
- Mad Adj Adv Verb
- Madcaply Adv
- Maddeningly Adv
- Madly Adv
- Maestoso Adj Adv Noun
- Magically Adv
- Magisterially Adv
- Magistratically Adv
- Magnanimously Adv
- Magnetically Adv
- Magnetostatically Adv
- Magnificently Adv
- Magniloquently Adv
- Maidenlike Adj Adv
- Maidenly Adj Adv
- Mainly Adv
- Majestically Adv
- Majorly Adv
- Maladroitly Adv
- Malapertly Adv
- Malapropos Adj Adv
- Maleficently Adv
- Malevolently Adv
- Malfeasantly Adv
- Maliciously Adv
- Malignantly Adv
- Malignly Adv
- Malleably Adv
- Malodorously Adv
- Mammogenically Adv
- Manageably Adv
- Managerially Adv
- Mandatorily Adv
- Manfully Adv
- Mangily Adv
- Maniacally Adv
- Manically Adv
- Manifestly Adv
- Manifold Adj Noun Verb Adv
- Manifoldly Adv
- Manipulatively Adv
- Manlike Adj Adv
- Manly Adj Adv
- Manner Noun Adv Verb
- Mannerly Adj Adv
- Mannishly Adv
- Manometrically Adv
- Manually Adv
- Many Adv
- Marbly Adj Adv
- Marginally Adv
- Maritally Adv
- Markedly Adv
- Marketwide Adj Adv
- Marketwise Adj Adv
- Martially Adv
- Martyr-like Adj Adv