An adjective can be made into a modal adverb by adding -mente (from Latin "mindly", ablative of "mens" (mind), feminine noun) to the ending of the feminine singular form of the adjective. E.g. lenta "slow (feminine)" becomes lentamente "slowly". Adjectives ending in "-re" or "-le" lose their "e" before adding -mente (facile "easy" becomes facilmente "easily", particolare "particular" becomes particolarmente "particularly"). There is also a plethora of temporal, local, modal and interrogative adverbs, mostly derived from Latin (e.g: "quando, dove, come, perché..." [when, where, how, why/because...]). [Source]
| Certo | adv | of course; certain (Common Replies) | |
| Scusi | adv | excuse me; sorry (Common Replies) | |
| Forse | adv | maybe (Common Replies) | |
| Anche | adv | too; as well |