- Machiavellianly Adv.
- Machinelike Adj. Adv.
- Macroscopically Adv.
- Mad Adj. Adv. Verb
- Madcaply Adv.
- Maddeningly Adv.
- Madly Adv.
- Maestoso Adj. Adv. Subst.
- 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. Subst. Verb Adv.
- Manifoldly Adv.
- Manipulatively Adv.
- Manlike Adj. Adv.
- Manly Adj. Adv.
- Manner Subst. 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.
- Marvellously Adv.