One word for one phrase:
1. Make worse - Aggravate
2. Drive someone in a vehicle - Chauffeur
3. Decline in value - Depreciate
4. An inscription in memory of a buried person - Epitaph
5. Not revealing one's thoughts or feelings readily. - Reticent
6. Do away with - Abolish
7. Equally skillful with each hand - Ambidextrous
8. The form of a literary work submitted for publication - Manuscript
9. A person with the same name as another - Namesake
10. A person who travels by foot - Pedestrian