refurbish
[verb]
Synonyms: renovate, clean up, do up (informal), mend, overhaul, repair, restore, revamp

[TahlilGaran] English Synonym Dictionary ▲

re‧fur‧bish /ˌriːˈfɜːbɪʃ $ -ɜːr-/ verb [transitive] especially British English
[Date: 1600-1700; Origin: furbish 'to clean up' (13-21 centuries), from Old French forbir]

1. to decorate and repair something such as a building or office in order to improve its appearance ⇒ renovate:
The Grand Hotel has been completely refurbished.

2. to change and improve a plan, idea, or skill
—refurbishment noun [uncountable and countable]

[TahlilGaran] Dictionary of Contemporary English ▲