regain
definition
to obtain possession of something once lost
example
After months of physical therapy, she was able to regain her strength and return to her regular activities.
synonyms
recoverreclaimretrieve
word origin — Middle English 'regainen', from Old French 'regagner', from Latin 'reganare' (to gain again), combining 're-' (again) and 'ganare' (to gain)